London, 1963. Schoolteachers Ian Chesterton and Barbara Wright are perplexed by the behaviour of one of their pupils, Susan Foreman. Her knowledge of science and history exceeds theirs, yet she seems totally ignorant of many common aspects of everyday life. They follow her to her home address, a junkyard with a police telephone box standing in it, and encounter her grandfather, the enigmatic Doctor. When they force their way past him into the police box, Susan's secret is revealed: she and the Doctor are aliens, and the police box is a time machine, the TARDIS, capable of visiting any point in the universe at any moment in time…
Earth, 100,000 B.C. The enigmatic Doctor, afraid that schoolteachers Ian Chesterton and Barbara Wright will reveal his secrets to the people of 20th century Earth, has taken them and his granddaughter Susan back to the dawn of human history. There, the four travellers are dragged into the savage politics of a tribe of cavemen who have lost the secret of making fire…
Prisoners of the earliest humans, the TARDIS crew are caught in a deadly power play for leadership of the tribe.
The TARDIS crew must make fire for the early humans to stay alive. But once they do, they may not be allowed to leave!
Time Unknown, Planet Unknown. The TARDIS lands in an eerie petrified forest overlooking a magnificent steel city. The Doctor wants to explore the city – but what is waiting there?
The dead planet is not uninhabited after all. The Doctor is about to meet what will become his greatest enemies. And he and his crew are dying of radiation sickness.
Imprisoned on Skaro by the scheming Daleks, the Doctor and his companions work to escape their clutches.
The time travellers work desperately to both escape the Dalek city and prevent a bloody massacre.
The time travellers have escaped from the Daleks, but left a vital piece of the TARDIS behind. Getting it back will mean pushing the Thals to mount a dangerous operation.
Ian, Barbara and the Thals struggle through the caves to reach the Dalek city. Will they get there in time? Is there even a way through the treacherous caves? And what are the Daleks planning?
Time is running out as the Doctor and his companions try to defeat the Daleks before they wipe out all life on Skaro.
A mysterious explosion has knocked the TARDIS into void. And in their confusion, the crew are turning on one another.
The TARDIS is adrift, the crew turning on each other. Only by working together can they find their way out before they are destroyed.
The TARDIS lands on a remote island, surrounded by a sea of acid. They meet Arbitan, keeper of the Conscience of Marinus who forces the travellers to go in search of five keys.
In the city of Morphoton, the Doctor, Barbara, Ian and Susan are welcomed as honoured guests and given anything they want. But Barbara soon discovers that paradise is an illusion.
Ian and Barbara find a temple in the middle of a hostile jungle. Inside is the ailing Darrius, keeper of one of the keys. As Darrius dies he gives Ian a clue to find the key.
In a snowy wasteland, Vasor, an unscrupulous trapper, imprisons the travellers in a frozen cavern inside a mountain. There they find one of the keys frozen in a block of ice.
Arriving in the city of Millennius, Ian is put on trial for murder. The Doctor takes on the role of defence counsel and must prove Ian's innocence or he will be executed.
The Doctor solves the murder mystery and finds the final missing key. With Ian now free, the travellers return to the island only to discover that Arbitan has been murdered.
The TARDIS lands inside an Aztec temple in 15th Century Mexico and become cut off from the ship when they leave the temple to explore.
The High Priest of Sacrifice, Tlotoxl begins to doubt Barbara's claim to be the reincarnation of Yetaxa and plots to undermine her position and eliminate her friends.
The Doctor and Ian attempt to find a way back to the TARDIS. Barbara attempts to distract Tlotoxl but the High Priest of Sacrifice already has plans for Susan.
Tlotoxl is preparing to make his move and have Barbara, the Doctor, Ian and Susan killed. Ian prepares for a fight to the death with the warrior, Ixta.
The 28th century. The TARDIS materialises on a spaceship orbiting a planet known as the Sense-Sphere, whose natives, the Sensorites, have trapped the ship's human crew in a state of paralysis.
The Doctor and his companions are on board an Earth ship trapped in orbit around the Sense-Sphere when it is boarded by the Sensorites, who steal the lock mechanism from the TARDIS.
The Doctor and his companions are escorted to the Sense-Sphere where they attempt to negotiate with the Sensorites for the release of the TARDIS.
Trapped on the Sense-Sphere, Ian is dying from the illness that has been killing the Sensorites and the Doctor tries to find a cure.
Trapped on the Sense-Sphere, the Doctor's investigations into the cause of the sickness affecting the Sensorites are hampered by the subversive activities of the City Administrator.
Trapped on the Sense-Sphere, the Doctor and his companions find three deranged human survivors who have been fighting a guerilla war against the Sensorites.
When the Doctor attempts to return Ian and Barbara to their own time, the TARDIS actually lands in 18th-century France during the French Revolution.
In Paris, Ian, Barbara and Susan are sentenced to death under the blade of the guillotine. Having escaped the burning farmhouse, the Doctor is on his way to rescue his friends.
Barbara and Susan are saved from the guillotine by two royalists, Jules and Jean, but Susan has fallen ill. At the prison, a stroke of luck provides Ian with a chance to escape.
Susan is now very ill and in desperate need of medical help. The royalist, Leon, arranges for Barbara to take Susan to a physician, but the physician betrays them.
The Doctor is reunited with Barbara at the prison and arranges for her to escape, but Susan remains behind bars. Jules rescues Ian, killing Leon in the process.
The Doctor leads Lemaitre to the royalist house where Lemaitre reveals that he is in fact the English spy, James Sterling.
Earth, 1964. An accident on landing vastly reduces the TARDIS and the travellers in size. They come across a scheme run by Forester, a ruthless businessman and his misguided scientist colleague Smithers to launch a new insecticide which is capable of destroying the local ecology. Forester is prepared to commit murder to secure the success of this project - can the inch-high travellers somehow foil him?
Earth, 1964. An accident on landing has greatly reduced the TARDIS and the travellers in size. They come across a scheme run by Forester, a ruthless businessman and his misguided scientist colleague Smithers to launch a new insecticide which is capable of destroying the local ecology. Forester is prepared to commit murder to secure the success of this project, but the inch-high travellers face danger of another kind.
Earth, 1964. Ian and Barbara are accidentally taken into Smithers' laboratory and, while the Doctor and Susan face a hazardous journey to reach them, they witness the deadly effects of DN6 first hand.
The TARDIS lands in a ruined and empty London in the 22nd Century. Robomen patrol the shattered streets. The Doctor is eager to discover the cause of the city's plight.
The Daleks have conquered Earth. Susan and Barbara have joined the human resistance who launch an attack on the Dalek flying saucer where the Doctor and Ian are prisoners.
The rebel attack on the Dalek flying saucer has been defeated. London is crawling with Daleks and Robomen, and the Doctor, Barbara and Susan must escape the city.
The Doctor, Barbara and Susan make their way out of London to the Daleks' mining operation in Bedfordshire whilst Ian faces the Black Dalek's pet Slyther.
Barbara is put to work in the Dalek mine where it is revealed that the Daleks intend to use a bomb to extract the Earth's magnetic core.
Ian plans to derail the Daleks' plan by sabotaging their bomb and the Doctor works to turn the Robomen against them. Afterwards, a tearful Susan remains on Earth with her new love.
Sometime in the 25th century, the Doctor and his friends land on the planet Dido and happen across a spaceship (from Earth) that has crash-landed. Its two occupants - a man named Bennett and a young girl called Vicki - are living in fear of a creature called Koquillion, a native of Dido possibly responsible for murdering other members from the spaceship. However, the Doctor realises after a while that Koquillion is in fact Bennett in disguise; it was Bennett who killed the others so as to conceal an earlier murder that he had performed on ship. In a confrontation with Dido humanoid inhabitants Bennett dies as he falls from a cliff. Not wishing the girl Vicki to be alone, the Doctor takes her with him in the TARDIS as a new companion.
Ian and Barbara discover that the paralysed Bennett has gone missing from his cabin. The Doctor discovers the truth about Koquillion, but endangers his own life in doing so.
After relaxing at a Roman villa the Doctor is mistaken for a murdered lyre player and targeted by an assassin. Meanwhile, Ian and Barbara are captured by slave traders.
Barbara is sold as a slave and Ian is to be trained as a gladiator. The Doctor and Vicki arrive at the Emperor's court with the Doctor still masquerading as Maximus Pettulian.
Poppaea plans to poison Barbara who has become the object of Nero's affections. The Doctor is to be thrown to the lions and Ian and Delos are set against each other in the arena.
Inspired by the Doctor, Nero sets Rome ablaze. Ian must fight his way out of the arena and rescue Barbara. The Doctor and Vicki hurry to flee the city and escape to the TARDIS.
The TARDIS is pulled down to the barren world of Vortis. The Doctor and Ian explore. Barbara falls under an hypnotic influence and is compelled to leave the safety of the TARDIS.
Rescued by the Menoptra, Barbara is then captured by the ant-like Zarbi. The Doctor and Ian trace the missing TARDIS to a giant web city and encounter a mysterious intelligence.
The alien intelligence, the Animus, coerces the Doctor into tracking down the Menoptra. Ian escapes the Carsinome and joins forces with Vrestin, but the Zarbi are in pursuit.
Ian and Vrestin fall into caverns beneath the surface of Vortis and encounter the Optera. The Doctor finds the landing site of the Menoptra, and the Zarbi prepare to ambush them.
Barbara and a few of the Menoptra hide in an ancient temple. The Doctor and Vicki escape the Carsinome and join forces with Barbara's group who are preparing to attack the Animus.
The Menoptra attack the Carsinome and the Doctor and his friends come face-to-face with the Animus. The Isop-Top device is their only hope of destroying the alien creature.
When the TARDIS lands in 12th Century Palestine, Barbara is captured by the Saracens. The Doctor, Ian and Vicki assist in saving King Richard. Ian is eager to go after Barbara. Vintage sci fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
Ian is knighted by King Richard and sent to rescue Barbara. The King's Chamberlain becomes suspicious of the Doctor and Vicki. Barbara makes a bid to escape from her kidnappers. This episode is missing from the archives.
The King's sister befriends the Doctor and Vicki and solicits the Doctor's help in discovering what plans her brother has. Barbara finds shelter, but El Akir's men are closing in. Vintage sci fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
Barbara hides from El Akir in a harem. Ian has been captured by bandits who resort to torture to extract money from him. The Doctor and Vicki attempt to escape the palace. This episode is missing from the archives.
The TARDIS arrives on a planet that has been turned into a space museum but the Doctor and his friends are puzzled when they find themselves out of phase with their surroundings.
Now back on their proper time track, the Doctor and his friends must work to avoid the future they saw for themselves.
With the Doctor missing, Ian, Barbara and Vicki find themselves in danger from the Moroks while the Xerons also try to make contact with them.
While Ian tries to force Lobos to release the Doctor from the museum, Vicki joins the Xerons in trying to gain the weapons needed to start a revolution against the occupiers.
The Daleks pursue The Doctor through time and space, with the intentions of exterminating him. Places they land include the Mary Celeste, a haunted house and the empire state building.
While Ian and Vicki are threatened by a Mire Beast, the Doctor and Barbara meet up with the Aridians...who are then ordered to hand them over to the Daleks.
The TARDIS crew's attempts to escape from the Daleks take them to the top of the Empire State Building and a 19th century sailing ship.
The TARDIS lands in a haunted house where the Doctor and his friends are confronted by Dracula and Frankenstein's Monster...and then the Daleks appear.
With Vicki trapped on board the Dalek time machine, the Doctor, Ian and Barbara decide to make their stand on the planet Mechanus.
The Doctor and his friends are taken into the Mechanoid City but their troubles are far from over...especially when the Daleks launch an attack.
The Doctor, Vicki, and Steven Taylor, go to 1066 England, but something doesn't seem right including modern inventions like a Gramaphone and electricity. Could there be another Time Lord?
The Doctor is being held prisoner by the Monk and Steven and Vicki's search for him brings them to the Saxon village.But a greater danger threatens when a Viking raiding party arrives.
The Doctor manages to escape from his cell and get the upper hand on the Monk but his plans are derailed when Sven and Ulf arrive at the monastery.
The Doctor finally discovers what the Monk is up to and must move fast to prevent his opponent from altering the course of history.
After an encounter with a hostile robot called a Chumblie, the Doctor and his companions are rescued by a group of female Drahvins.
With the knowledge that the planet will be destroyed in two days, the Drahvins instruct the Doctor to help them steal the Rills' ship.
The Doctor and Vicki encounter the Rills and learn the situation is more complex than they thought while Steven finds the Drahvins' hospitality ever more perilous.
The Doctor and Vicki enlist the aid of the Chumblies to rescue Steven from the Drahvins and then find a way off the planet before its destruction.
Space Security agent Marc Cory visits the planet Kembel to investigate rumours of Dalek activity in the area. However, his ship is shot down and his crewmates are poisoned by the thorns of Varga plants, genetically engineered carnivores which transform their unlucky victims into Vargas as well. Despite these dangers, Cory discovers that the Daleks have formed an alliance with several other alien species, intending to launch a war against Earth. He makes a tape of his discoveries -- but is exterminated before he can get word to his superiors...
The Doctor infiltrates the Daleks' conference to try and discover their plans, leaving Steven, Katarina and Bret to find a way off the planet.
The Doctor, Steven and Sara are accidentally transported to the planet Mira where Chen sends the Daleks after them.
The Doctor, Steven and Sara travel to Ancient Egypt, pursued by both the Daleks and the Meddling Monk.
The Doctor, Steven and Dodo arrive on a giant spaceship millions of years in the future, transporting the last humans away from the doomed Earth.
With the Ark infected with a cold virus, the Doctor must convince the Guardians to trust him so he can find a cure.
The Doctor, Steven and Dodo have travelled 700 years into the future and find that the Ark is now under the control of the Monoids as it approaches Refusis.
The Monoids abandon the Ark, leaving Steven and the Guardians to die, but a mutiny in their ranks may give the Doctor a chance to bring about peace.
As the Doctor nears the end of his game against the Toymaker, Steven and Dodo take on Cyril in a lethal game of hopscotch to try and recover the TARDIS.
The TARDIS arrives in Tombstone, Arizona in 1891. Where the Doctor is looking for a dentist when he has a toothache, where The Doctor finds the local dentist is the famous Doc Holliday who is in a feud with The Clanton Brothers and their hired gunfighter Johnny Ringo, whilst local sheriff Wyatt Earp is trying to keep the peace. The Doctor, Steven and Dodo find themselves joining forces with The Clanton Brothers and Sheriff Wyatt Earp.
With the Clantons believing the Doctor to be Doc Holliday, Wyatt Earp takes him into protective custody but this leaves Steven and Dodo in danger.
Earp comes to Steven's rescue and arrests Phineas Clanton, prompting the Clantons to decide to enlist the help of Johnny Ringo.
The Clantons have shot Warren Earp, leading to a showdown between the two families with the Doctor powerless to prevent bloodshed.
The Doctor and Dodo return to London in the present day where the Doctor becomes concerned about WOTAN, a new super-computer installed in the Post Officer Tower.
Dodo is under the control of WOTAN and attempts to lure the Doctor into a trap, while the rest of WOTAN's slaves begin construction on its robotic War Machines.
Ben tries to escape from the warehouse but is captured by Polly, who is now also under WOTAN's control, and forced to work on construction the War Machine.
London 1966 and the Doctor and Dodo, on a visit to the Post Office Tower, meet Professor Brett whose new computer WOTAN can actually think for itself and is soon to be networked with other computers around the world. However, WOTAN believes that humans are inferior to machines and should, therefore, be ruled by them. Exerting a hypnotic influence, WOTAN arranges for the construction of War Machines - heavily-armed, self-contained mobile computers - with which to take over the world. These prove more than a match for the Army, but the Doctor is able to capture one of them, which he then re-programs to destroy WOTAN. When the crisis is over, Dodo chooses to remain in London; Ben and Polly, however, inadvertently become the Doctor's new companions when they enter the TARDIS to return his lost key.
Landing at the South Pole, the travellers find that Earth's twin planet is disrupting a space mission. The Doctor predicts that they will soon receive visitors from the new planet.
Earth's energy is being drained away by the new planet, Mondas, and faces destruction. Cybermen invade the base and threaten to convert the humans into creatures like themselves.
Determined to stop the Cybermen and the energy drain, General Cutler prepares to launch the deadly Z-bomb. Ben and Polly desperately try to stop the launch as the countdown begins.
The Cybermen invade the Snowcap base, killing General Cutler, but they are then defeated. Back in the TARDIS, the worn-out Doctor regenerates.
Ben and Polly suspect that the 'new' Doctor is really an imposter. The TARDIS lands on the planet Vulcan where a murder has been committed.
Posing as an Examiner from Earth, the Doctor warns the scientist, Lesterson about the dire consequences of reactivating the dormant Daleks.
Polly is taken prisoner by the rebels who intend to use the Daleks to take control of the colony. The Doctor discovers that all three Daleks have now been reactivated.
Lesterson is driven insane when he discovers that the Daleks are reproducing themselves, and are preparing to seize control of the colony.
Bragen leads the rebellion and takes control of the colony, killing Governor Hensell. But the Daleks are also ready to make their final move.
As a battle rages between the rebels and the loyal colonists, the Daleks begin their attack. The only chance of survival for the colony rests with the Doctor.
The TARDIS materialises on a deserted beach where the Doctor and his friends are captured by primitive warriors and taken to the fabled city of Atlantis.
Jamie and Ben are set to work in the mines but are determined to escape. The Doctor discovers that Zaroff's mad plans will cause the destruction of the Earth.
The Doctor hatches a dangerous plan to kidnap Professor Zaroff and encourages the Fish People to revolt against their masters and put a stop to the production of food.
With Zaroff's plan nearing completion, the Doctor and Ben realise the only way to save the world is to destroy Atlantis.
The TARDIS lands on the Moon in 2070 and Jamie is injured during a spacewalk. The travellers are treated with suspicion at the weather control moonbase where a plague has struck.
Polly discovers that the Cybermen are abducting the plague victims, but nobody believes her until it is too late.
The Cybermen have taken control of the moonbase and are preparing to use the weather control systems to wreak havoc on Earth.
The moonbase is cut off from Earth and under siege. The Cybermen launch an all-out attack and the Doctor formulates a dangerous plan to repel the invaders.
The TARDIS arrives at a holiday camp company with the crew worried by a prediction of giant crabs and the Doctor becomes interested in the apparent madman Medok's stories of creatures that roam the colony at night.
The Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.
The Doctor, Polly and Jamie are sentenced to work in the pits and an escape attempt sees Ben's loyalties called into question again.
The Doctor and Polly manage to save Jamie from the Macra, but can they convince the Pilot on who is really in charge of the colony?
The TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.
With Polly having apparently forgotten them, the Doctor, Ben and Jamie decide to carry out their own investigation of Chameleon Tours.
The Doctor, Jamie and Samantha manage to convince Crossland to trust them and he persuades the Commandant to let them continue their investigation.
When Spencer attempts to kill them, the Doctor, Jamie and Samantha become convinced Chameleon Tours are hiding something and Samantha decides to book a ticket on one of their flights.
Jamie finds himself aboard the Chameleons' satellite and meets their Director while the Doctor forces the Chameleon Meadows to tell him the aliens' plans.
The Doctor and Pinto are captured by the Chameleons but the Doctor manages to use their dependence on their human originals to create dissent in their ranks.
Trying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.
The Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.
As part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.
Jamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.
With the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.
The Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.
The Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.
The Doctor meets Professor Parry and his archaeologists on the planet Telos. The expedition is there to unearth the remains of Cybermen who died out long ago. Or did they..?
Professor Parry and his team begin to unlock the secrets of the Cybermen's tomb. But there are some amongst the explorers who have a dark agenda of their own.
The tombs are revealed to be a trap. The Cybermen have risen from their centuries-long hibernation and are intent on converting the humans into a new race of Cybermen.
The Cyber Controller has been revitalised after leaving the icy tomb, threatening to overpower his human foes. The Doctor is determined to return the Cybermen to their long sleep.
Jamie and Victoria make an incredible discovery in a cave on the mountain. The Doctor is tied to the gates of the Detsen Monastery as a lure for the hostile Yeti.
The TARDIS arrives on Earth in the midst of a new ice age where Brittanicus Base is fighting a battle to force back the glaciers. A huge Ice Warrior is found frozen in the ice.
Varga, the Ice Warrior, has returned to life and has captured Victoria and takes her with him to the glacier where he intends to find his frozen comrades.
Varga revives four fellow Ice Warriors from the ice and they begin to excavate their ship. Victoria places herself in jeopardy when she attempts to warn the Brittanicus Base.
Victoria is chased by the Ice Warriors deep into the caves inside the glacier. The Doctor goes to the Ice Warriors' ship in an attempt to broker a peace, but they do not trust him.
The Doctor and Victoria are held prisoner by the Ice Warriors who are preparing to fire their deadly sonic cannon at the Brittanicus Base.
The Ice Warriors invade the human's base, and it is up to the Doctor to repel them. Using the ioniser is the only way to defeat the Martians, but to do so could have consequences.
The TARDIS materialises in 21st-century Earth, where the Doctor discovers that he's the exact double of the philanthropic scientist Salamander. Salamander has ended world hunger and has been supplying humanitarian aid to parts of the world which have recently suffered inexplicable seismic activity. However, his former associate, Giles Kent, claims that Salamander is in fact a power-crazed maniac who's slowly replacing the authorities of Earth with lackeys under his thumb. The Doctor isn't so sure, and agrees to impersonate Salamander and find out the truth only if Jamie and Victoria can prove to his satisfaction that Salamander is indeed an evil man. However, Jamie and Victoria soon find themselves in over their heads – and even before he has a chance to act, the Doctor is already being hunted by Donald Bruce, the suspicious chief of World Zone security.
Jamie and Victoria travel to Europe where they infiltrate Salamander's staff. Salamander plots to take control of the Central European Zone by discrediting its leader, Denes.
Jamie and Victoria befriend Fariah, intent on discovering the truth about Salamander. Astrid plans to rescue Denes, but not everything goes according to plan. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
Kent coerces the Doctor into agreeing to impersonate Salamander. Deep beneath his research centre, Salamander is hiding a dark secret. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
Impersonating Salamander, the Doctor infiltrates the research centre, but Benik becomes suspicious. Underground, Salamander's deception is discovered. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
Astrid discovers the underground bunker and Salamander's secret. On the surface, Giles Kent reveals his true colours. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
The TARDIS lands in the London Underground, which is deserted. Jamie and Victoria are captured by the military. The Doctor is amazed to discover that Yetis are in the tunnels.
The deadly web continues to advance in the tunnels of the Underground. Professor Travers realises that the Doctor is the only man who can help bring an end to the Yeti menace.
The Doctor meets Colonel Lethbridge-Stewart who takes control of the military operation against the Yeti. But the Doctor suspects that there is a traitor in their midst.
The Doctor acquires a sample of the web, but when he, Jamie and Victoria return to the HQ to examine it, they discover that Professor Travers has been abducted by the Yeti!
Using Travers's body, the Great Intelligence demands that the Doctor allows his mind to be drained. Victoria is taken hostage and the Doctor has just 20 minutes to decide her fate.
The HQ is destroyed by the web and everyone is captured by Yetis. The traitor is revealed and all seems lost as the Doctor submits himself to the Great Intelligence's mind drain.
The Doctor, Jamie and Victoria find themselves on the east coast of England where a gas refinery is experiencing problems and a sinister heartbeat is throbbing through the pipes.
As the situation worsens at the refinery, Chief Robson refuses to halt the gas flow. Elsewhere, the weed extends its influence and Mrs Harris receives sinister visitors.
Despite the mounting evidence, Chief Robson refuses to acknowledge that matters have escalated beyond his ability to control them.
Investigating the impeller shaft, Van Lutyens is overwhelmed by the weed creature. A call comes from one of the off-shore rigs – the weed creatures are attacking and taking over!
As the weed breaks into the Pipeline Room at the refinery, the deranged Chief Robson kidnaps Victoria in a helicopter and heads for the Control Rig.
The Weed has complete control of Chief Robson and threatens to conquer Earth. The Doctor searches for a means to defeat the creature and believes the answer may be Victoria…
Cybermats are sent to the Wheel to eat the station's supply of bernalium, forcing the Wheel to search for bernalium on the Silver Carrier where the Cybermen are waiting for them.
The Doctor and the crew of the Wheel battle valiantly against the invading Cybermen, but to defeat the approaching fleet of Cyber ships, the Doctor needs a vital component from the TARDIS.
The TARDIS lands on the peaceful planet of Dulkis. There, the Doctor, Jamie and Zoe discover that the ruthless Dominators have arrived and are enslaving the inhabitants with their deadly robots, the Quarks.The Doctor and his crew must prevent the destruction of the planet and help the Dulcians fight back.
The Doctor and Jamie are taken captive by the Dominators and subjected to intelligence tests. Zoe heads to the Dulcian capital to request help, but the pacifist Dulcians are reluctant to act.
Zoe and the Dulcians are captured by the Quarks and set to work. Unable to convince the Dulcian council of the Dominator threat, the Doctor returns to the island to rescue Zoe.
Jamie and Cully fight back against the Quarks but Dominator Toba threatens the lives of his prisoners if they do not identify the culprits.
The Doctor hatches a plan to intercept the Dominators' atomic seed pod as it is dropped into the planet's core. If he fails, the whole of Dulkis will be destroyed.
The Doctor activates an emergency unit on board the TARDIS to escape destruction by a volcanic eruption. Unfortunately, it moves them out of normal space and time to a deadly world where fantasy rules. The travellers find themselves lured out of the ship into a ghostly white void.
Arriving in the Land of Fiction, the Doctor searches for his companions in a forest of words. Clockwork soldiers are on the prowl and fictional characters come to life.
With the help of Rapunzel, Jamie escapes from a clockwork soldier into the citadel where he makes a discovery. The Doctor and Zoe are confronted by the mythological minotaur.
The Doctor, Jamie and Zoe are captured by the White Robots in the Citadel and are taken to meet the Master of the Land of Fiction who has a proposition for the Doctor.
The Doctor engages in a battle with the Master, both summoning characters from fiction to fight each other. If the Doctor loses, he will be trapped in the Land of Fiction forever.
The TARDIS lands in London where the Doctor, Jamie and Zoe agree to help find Isobel Watkins' missing uncle. Searching for Professor Watkins at his last place of work, a multinational electronics supplier, he meets the company's managing director. He's not what he seems - and possesses alien technology in his office.
Alistair Gordon Lethbridge-Stewart, now a UN Brigadier, confirms to the Doctor that there is something suspicious occurring at International Electromatics. Zoe and Isobel's investigation places them in terrible danger, and Jamie tries to save them.
The Doctor and Jamie are taken prisoner by Tobias Vaughn, who denies abducting Zoe and Isobel. The Doctor suspects that there may be an even greater threat behind Vaughn.
Trapped by Vaughn's men at International Electromatics, the Doctor requests help from the Brigadier and UNIT, the United Nations Intelligence Taskforce. A UFO is delivering cocoons to the electronics firm – but what is inside them?
The Doctor discovers that the Cybermen are planning to immobilise Earth's population by transmitting a hypnotic signal broadcast through International Electromatics products.
Zoe, Jamie and Isobel confront the Cybermen advancing on them from all sides in the sewers beneath London. The Doctor hurries to devise a protection from the Cybermen's hypnotic signal, as they set their sights on a paralysed London.
The Cybermen have immobilised the Earth's population with a hypnotic signal. Their fleet arrives and they invade in force. The Doctor desperately attempts to persuade Vaughn to help him resist the invaders.
The Cybermen have launched their deadly megatron bomb which will destroy all life on Earth, unless the Doctor can deactivate the homing signal.
The TARDIS lands on the planet of the Gonds, a primitive and enslaved people. Every year, two of the finest Gond students are sent to be 'companions' of the mysterious and unseen Krotons. But the Doctor reveals that only death awaits them.
Zoe and the Doctor submit themselves to the Krotons' IQ tests and are selected to enter the Dynatrope, the Krotons' ship. There they watch as the crystalline Krotons are brought back to life.
The Doctor and Zoe are pursued by a Kroton as they attempt to return to the TARDIS. The Gonds prepare to destroy the Krotons' ship, but Jamie is still held prisoner inside.
The Krotons are preparing to leave the planet and demand that the Gonds hand over the Doctor and Zoe, so that their mental energy can be drained.
The TARDIS arrives on 21st Century Earth where all long-distance journeys are made instantaneously by T-Mat. But aliens have invaded the T-Mat relay station on the Moon, and they're about to cause havoc.
With the commerce of the world grinding to a halt, the Doctor, Jamie and Zoe agree to investigate. They set off for the T-Mat Relay Station on the Moon in Professor Eldred's old-fashioned rocket.
On the Moon, the Doctor is captured by the Ice Warriors as he spacewalks to the T-Mat relay station. He learns that they intend to use T-Mat to spread a deadly fungus across the world.
The Ice Warriors' seed pods beginning materialising all over the globe while Slaar decides to kill the Doctor by T-matting him into space.
An Ice Warrior invasion fleet is on its way to the Moon. Meanwhile, the Doctor, Zoe & Jamie return to Earth by T-Mat, where the Doctor discovers there is only one way to destroy the fungal pods.
Returning to the Moonbase, the Doctor confronts Slaar and the remaining Ice Warriors and must find a way of deflecting the invasion fleet that is heading towards them.
General Hermack suspects Milo Clancey of being in league with the pirates. Trapped inside a segment of the beacon, the air supply is running out for the Doctor, Jamie and Zoe.
The TARDIS lands in what appears to be the front-line trenches at the height of battle in war-torn France, right in the middle of World War I. Everyone they meet are convinced that the crew are spying and it doesn't take long for the crew to be on the run, but not before breaking the hypnotic conditioning of Carstairs and Lady Jennifer. Having escaped one war-zone they find themselves in another - Roman occupied Britain of some 2,000 years ago, then on to the American Civil War. The situation worstens when the Doctor suspects one of his own people, a Time Lord, to be behind the War Games working for a race of aliens trying to run the wars to their conclusions under controlled conditions to find a super-army or fighters. The Doctor is faced with an impossible situation - not only does the War Lords' control over hundreds of thousands of fighters need to be removed, but the soldiers have to be returned to their natural habitats. He conceeds defeat at the task, knowing that the TARDIS is not equipped for the task. He sends an SOS, calling in his own people even though it is revealed that he is 'on the run' from them for the theft of a TARDIS and for meddling... The Doctor is caught and faces trial.
Finding evidence of alien technology in Smythe's office, the Doctor, Jamie and Zoe make their escape in Lady Jennifer's ambulance, but Smythe gives orders to have them killed.
The Doctor discovers that they are on an alien planet divided into different time zones where human soldiers fight never ending wars. Vintage sci fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
The Doctor and Zoe penetrate the Aliens' HQ from where the war games are controlled. Carstairs is reconditioned and exposes the Doctor and Zoe as German spies. Vintage sci-fi taking us on adventures in time and space, reflecting the broadcast standards and attitudes of its time.
In the American Civil War zone, Jamie and Lady Jennifer join forces with resistance fighters from various time zones and prepare to launch an attack on Central Control.
The Doctor sends Zoe to the war zones to assemble a resistance force. The Doctor remains in Central Control to steal the processing machine, but the War Chief is one step ahead.
The Doctor, Jamie and Carstairs have escaped back to the 1917 war zone, but General Smythe is waiting for them and opens fire on them with a machine gun.
The Doctor is captured by the War Chief, who belongs to the same race of people as the Doctor, and offers an alliance. In the 1917 zone, fighters prepare to attack Central Control.
The rebels seize control of the aliens' HQ but the Doctor is forced to send a call for help to his own people, the Time Lords.
The war games are over and after a sad farewell to Jamie and Zoe, the Doctor is put on trial by the Time Lords for breaking their ancient laws.
The TARDIS takes the newly regenerated Doctor to Earth to begin his exile. Brigadier Lethbridge-Stewart leads a UNIT investigation into a mysterious meteorite shower.
A recovered Doctor escapes the hospital and joins UNIT in their investigation. Meanwhile, Channing directs one of his Auton servants to recover a meteorite.
Sam Seeley has found one of the meteorites but the Autons want it back and are closing in. General Scobie visits Auto Plastics,
The invasion begins as Auton shop dummies come to life and attack the public. The Doctor and UNIT infiltrate Auto Plastics where the Doctor faces the Nestene consciousness.
UNIT are summoned to Wenley Moor research station which is experiencing mysterious power losses. In the nearby caves, one of the staff has been killed and another sent insane.
Investigating the caves, the Doctor is attacked by a dinosaur-like creature. Dr Quinn is hiding a secret that could endanger the lives of everyone.
The creature from the caves, wounded and dangerous, is on the loose on Wenley Moor. Dr Quinn attempts to recover it and is unwilling to listen to the Doctor's warnings.
Fearful of a war breaking out between the Silurians and mankind, the Doctor attempts to make peace between the races. But there are those on both sides unwilling to listen.
When the Silurian leader is killed, all hopes of peace are lost. The Silurians infect Major Baker with a virus deadly to humans and release him to spread the infection.
As the Silurian plague quickly spreads, the Doctor desperately searches for a cure. But the Silurians are aware of the Doctor's efforts and intend to stop him.
With the antidote to the plague found, the Silurians retaliate and take over the research centre. They now intend to destroy the Van Allen Belt, resulting in death for all mankind.
Contact has been lost with Mars Probe 7. When contact is also lost with the recovery ship, UNIT is called in and the Doctor learns that someone is sending messages to the vessel.
Recovery 7 has returned to Earth but the UNIT convoy transporting the capsule is ambushed. The Doctor is able to relocate the capsule, but is he too late?
The recovery capsule is empty with the astronauts seemingly kidnapped. But Liz notices that the radiation count is high and the Doctor deduces that the occupants were not human.
Liz has been captured by Reegan who is holding the three aliens captive. The Doctor suspects Quinlan's part in the conspiracy, but Quinlan is killed before he can reveal the truth.
The Doctor prepares to pilot the Recovery 7 ship into space, but Reegan sabotages the fuel supply which will send the Doctor into the sun.
On board a vast spacecraft, the Doctor meets the alien captain who demands the return of the three ambassadors sent to Earth or he will destroy the world.
General Carrington is behind the kidnapping of the ambassadors and intends to turn the world against the aliens by revealing their true identity to the world in a TV broadcast.
England, the near future. UNIT is providing security and scientific support for the Stahlman project, an attempt to tap the Earth's core for energy. But things are already going wrong…
Strange deaths, men changing into monsters, hot green slime pouring out of the waste pipes – but Professor Stahlman is determined to press ahead with the Inferno project no matter what the cost!
The Doctor has vanished from the Inferno project… or has he? He finds himself in the same place, but everyone has changed… and the drilling is closer to its deadly conclusion.
In a parallel England, the Doctor tries desperately to convince his captors of the immense peril they are in. But they are convinced he is a spy. And penetration zero is getting close…
The parallel Inferno has broken through the Earth's crust, unleashing terrible seismic forces and dooming the planet. The Doctor hopes to return and save his world. But the bestial primords are closing in...
The Doctor is trapped in a parallel world that is going up in flames. Can he escape in time to save Earth in his own universe?
The Doctor has escaped the catastrophic destruction of a parallel world. But can he stop Stahlman before he destroys this one?
Earth, the near future. The Master – another renegade Time Lord and the Doctor's sworn enemy – arrives and allies himself with the Nestene Consciousness in an attempt to conquer the planet.
The Doctor investigates Rossini's International Circus. The Master, meanwhile, has assumed control at the plastics factory and is manufacturing new lines of living plastics.
Earth, the near future. The Master - another renegade Time Lord and the Doctor's sworn enemy - arrives and allies himself with the Nestene Consciousness in an attempt to conquer the planet. But how can plastic flowers be an invasion weapon...?
The Doctor catches up with his old enemy, the Master. Can anyone stop the Nestene Consciousness?
At Stangmoor Prison, the Doctor and Jo watch a demonstration of the Keller Machine which can extract evil impulses from criminals. But the experiment goes wrong and a man dies.
A full-scale riot takes place at the Prison and Jo is taken hostage. Meanwhile, at the World Peace conference, the Chinese delegate's aide prepares to kill the American delegate.
The Master is behind the Keller Machine and uses it to recruit the rioting inmates at Stangmoor Prison. He plans to capture a missile and fire it at the World Peace Conference.
The mind parasite within the Keller Machine becomes too powerful for the Master to control. It learns how to move of its own accord and goes on the hunt for new minds.
The Master forms an uneasy alliance with the Doctor so that between them they can subdue the Keller Machine which is now out of control.
The Keller Machine breaks free of the Doctor's restraining device and the Doctor has no choice but to turn the parasite against the Master.
Axos lands on Earth. The Axons ask only to be allowed to repair their damaged ship and offer the gift of the miraculous Axonite in return. But the Axons aren't all that they seem.
The Master is in league with the Axons who intend to consume Earth. The Doctor subjects Axonite to tests and discovers the terrible truth.
The Axons reveal their true nature and attempt to obtain the secret of time travel. Meanwhile, the Master, forced to work for UNIT, concocts a plan to strike back at Axos.
With Axos poised to destroy the world, the Doctor appears to switch sides and allies himself with the Master. Together they plan to escape Earth, leaving it to Axos...
The TARDIS takes the Doctor and Jo to a barren world in the far future where human colonists are scratching a living. But at night, the colonists are menaced by a monster.
The Interplanetary Mining Corporation, represented by Captain Dent, arrives on the planet claiming that the colonists have no right to be there.
When Jo attempts to break into the IMC ship to find incriminating information, she is captured and held hostage. If the Doctor doesn't co-operate, Captain Dent will have Jo killed.
The Master arrives, posing as an adjudicator from Earth who has come to settle the dispute between the colonists and the miners. However, he has an agenda of his own.
With Jo held prisoner in his TARDIS, the Master forces the Doctor to take him to the underground city of the primitives. Any sign of treachery from the Doctor and Jo will die.
In the underground city, the Doctor and the Master confront the guardian of the Doomsday Weapon. The miners make their last move to force the colonists to leave the planet.
The Doctor tries to prevent Professor Horner from breaking into an ancient barrow near the village of Devil's End. Posing as the village vicar, the Master summons dark forces.
Devil's End is sealed off from the outside world by a heat barrier. The Doctor and Jo return to the barrow where they are confronted by the gargoyle, Bok.
The Doctor attempts to help the Brigadier penetrate the heat barrier, but is attacked by the Master's servant in a helicopter. The Master prepares to summon the Daemon Azal.
The Doctor is captured by the villagers who are under the Master's control. Jo goes to the church to prevent the Master from summoning Azal for the final time, but is too late.
UNIT have penetrated the heat barrier and launch an attack on the gargoyle, Bok. In the cavern, the Daemon Azal confronts the Doctor and the Master to decide the fate of mankind.
When Sir Reginald Styles claims to have seen a ghost, UNIT is called in. The Doctor and Jo spend the night at Styles' house and become the target of an assassin.
A captive of the guerrillas, the Doctor discovers they intend to change history. Jo is transported to the 22nd Century where she unwittingly gives vital information to the Daleks.
The Doctor arrives in a bleak future where Earth is ruled by the Daleks and mankind is enslaved. Rescuing Jo, the two escape but the brutish Ogrons are in pursuit.
The Controller betrays the Daleks and is exterminated. The Daleks travel back in time to the 20th Century to ensure that the peace conference fails.
The planet Peladon is hoping to join the Galactic Federation. But King Peladon's Chancellor has been murdered and it seems that the legendary royal beast, Aggedor, is to blame.
The work of the committee is hampered by sabotage, fear and suspicion. The Doctor knows the Ice Warriors of old and believes that they may be the guilty party.
The Doctor is sentenced to a fight to the death in the pit with the King's champion, Grun. But the saboteur and killer is still at large.
Hepesh, supported by the delegate from Arcturus, is revealed to be behind the attacks. Arcturus is killed but Hepesh escapes to rouse a rebellion against the King.
The Doctor and Jo visit the Master who is held prisoner on an island. They learn that several ships have recently been sunk in the area and the Doctor decides to investigate.
The Doctor is eager to make peace between the Sea Devils and the humans but has discovered that the Master is up to his old tricks.
Jo attempts to rescue the Doctor who is being held prisoner by the Master and Trenchard. The Master plans to summon the Sea Devils from beneath the waves.
The Doctor attempts to persuade Captain Hart of the danger that the Master represents. Eager to make contact with the Sea Devils, the Doctor journeys deep into the ocean.
The Doctor is captured by the Sea Devils and taken to their undersea base. There he tries to make peace with the creatures, but his efforts are thwarted by the Navy.
The Sea Devils come to the surface and attack the Naval base. The Doctor is forced to create a machine that will awaken the creatures across the entire world.
The Time Lords send the Doctor to a Skybase above the planet Solos in the 30th Century. The Marshal of the Skybase is determined to stop Solos achieving independence from Earth.
Fearing Jo has died in Solos's hostile environment, the Doctor is forced to work with the scientist, Jaeger, to make the planet's atmosphere breathable for humans.
Ky opens the message box but cannot understand the ancient carved tablets inside. The Marshal seals the Doctor and his friends in the caves and prepares to gas them to death.
The Doctor deduces the true meaning of the ancient carvings and must brave the intense radiation of the thaesium caves to retrieve a crystal.
With Jo held prisoner, the Doctor is forced to work for the Marshal. The Earth Investigator's ship prepares to dock at Skybase.
Despite the Doctor's arguments, the Earth Investigator reinstates the Marshal as commander of Skybase. Bombarded by thaesium radiation, Ky begins an incredible transformation.
Masquerading as research scientist, Professor Thascales, the Master is using a device called TOMTIT to summon an ancient and powerful creature from beyond time.
The Doctor tracks the Master down to the Newton Institute. There, after a disastrous attempt to summon Kronos, the Master prepares to use TOMTIT again.
Krasis, High Priest of Atlantis, has been summoned by the Master to help him find the crystal of Kronos. The Master uses TOMTIT to summon threats from the past to attack UNIT.
As UNIT forces approach, the Master leaves for Atlantis in his TARDIS. However, the Doctor is not far behind and in the time vortex, the two Time Lords confront each other.
Arriving in Atlantis, the Master seduces the beautiful Queen Galleia so that he might possess the crystal of Kronos. But it is protected by a guardian who is half man, half beast.
With the crystal of Kronos in his possession, the Master prepares to release the Chronovore. The Doctor is powerless to stop his nemesis as the end of Atlantis approaches.
England, the near future. A strange anti-matter creature arrives on Earth and attacks UNIT HQ. It seems to be specifically seeking the Doctor out - but why? With the Time Lords themselves unable to help, it seems the only person who can help the Doctor is himself - or selves...
The third Doctor and Jo find themselves on an artificial world inside the black hole while the second Doctor tries to find a way to control the organism.
The Time Lord Omega reveals himself to the third Doctor along with plans for vengeance against his own kind.
Omega reveals the purpose behind bringing the Doctor to his antimatter world, but the Doctor(s) discover a startling fact about Omega that he didn't know himself and eventually strike a bargain.
The Doctor attempts to test his new dematerialisation circuit by taking Jo to Metebelis Three but instead the TARDIS arrives in the hold of a 1920s cargo ship.
The Doctor is sentenced to life imprisonment at a lunar penal colony while Jo encounters an old enemy.
The Master rescues the Doctor from the lunar penal colony, aiming to take him and Jo to the Ogrons' planet, and the Doctor's attempt to escape leaves him stranded in space.
The Doctor, Jo and the Master are taken to Draconia, where the Doctor tries to convince the Draconians of the truth.
The Doctor, Williams and the Draconian Prince head to the Ogrons' planet to find evidence of the Master's actions but the Master tricks Jo into leading them into a trap.
The planet Spiridon, the year 2540. The Doctor and Jo arrive on the trail of the Daleks, and find unexpected allies in the shape of a Thal suicide squad. But what has brought the Daleks here in the first place?
The Doctor is captured by the Daleks, while Jo is rescued by a friendly Spridon named Wester.
The Doctor and Codal escape from their cell and meet up with the Thal commandos who are trying to get into the Dalek base.
The Doctor and his friends escape from the Dalek base, prompting the Daleks to devise a plan to wipe them out.
The Doctor and his friends ambush two Daleks as part of their plan to get back into the city, but the Daleks are on the verge of unleashing their virus.
The Doctor and his friends prepare to refreeze the Dalek army but the Dalek Supreme has arrived on the planet determined to destroy them all.
While the Doctor plans a holiday to Metebelis Three, Jo and the Brigadier are intrigued by a mysterious death at a coal mine in Llanfairfach, which is being blamed on local company Global Chemicals.
The Doctor and the Brigadier attempt to rescue Jo and Bert from the mine but Global Chemicals prove distinctly uncooperative.
The Doctor and Jo manage to escape from the mine with a maggot egg but Stevens is determined to stop them analysing it.
The Brigadier calls in a full UNIT force to deal with the giant maggots while the Doctor infiltrates Global Chemicals to find out what is really going on.
The Doctor manages to escape from BOSS with help from Yates and discovers Cliff has been infected by a giant maggot.
The Doctor attempts to destroy the giant maggots and cure Cliff but the real threat is BOSS, who is poised to take over all the world's computers.
The Doctor and Jo attempt to find a way out of the Scope but, when Vorg attempts to entertain the Minorans, the crew of the Bernice suddenly become a lot more dangerous.
The Doctor and Jo return to the Bernice to try and aid their escape but find themselves pursued by the Drashigs.
The Doctor escapes from the Scope and joins forces with Vorg to try and save its inhabitants but Kalik is still determined to use the Drashigs to start a rebellion.
The Doctor and Jo land on a spaceship in the far future as it is attacked by Ogrons, which the human crew see as Draconians. The Doctor and Jo are taken to Earth as spies.
The Doctor and Jo are taken to Earth, where both humans and Draconians believe them to be a spy for the other side.
England, the 12th century. Robber baron Irongron is recruited by Linx, a Sontaran warrior whose starship has been forced down on Earth. Linx is forced to use a time-travel device to steal resources and scientists from the future to repair his ship, but in doing so involves UNIT and the Doctor...
The Doctor tracks the missing scientists to Irongron's castle, where Linx is using them to repair his spaceship and construct advanced weapons for Irongron.
The Doctor escapes the castle with Sarah and Hal and must persuade Sir Edward to trust him before Irongron launches an attack on them.
The Doctor attempts to return the scientists to their own time, before Linx tries to use his spaceship and destroys the entire castle.
London, the near future. The Doctor and Sarah return to a deserted city under martial law.
The barren planet Exxilon, some time in the future. The TARDIS is forced down by a total power failure and the Doctor and Sarah meet a stranded Earth crew who came here to mine for priceless medical supplies. But what is causing the power failures? And why have the Daleks come here too?
The Doctor and the MSC crew join forces with the Daleks to mine the parrinium, only to come under attack from the Exxilons.
The Doctor and Sarah meet up with Bellal, who helps them escape from the Daleks and explains the origin of the City.
The Doctor and Bellal continue to penetrate the City's defences while Sarah and Jill try to stop the Daleks leaving with the parrinium.
The planet Peladon, some time in the future. The Doctor and Sarah arrive on the planet Peladon 50 years after "The Curse of Peladon" They find King Peladon's daughter, Queen Thalira has inherited the throne. The Galactic Federation is at war with Galaxy Five and needs the mineral Trisilicate in order to bring about an end to the war. It seems the Ghost of Aggedor has been sighted and is blamed for killing of miners, which hampers the acquisition of the much needed Trisilicate.
The Doctor is rescued by Gebek, prompting him to try and help the miners, but his advice results in Ettis launching another attack on the armoury.
The Doctor and Sarah pacify Aggedor and the Doctor encourages the Queen to make peace with the miners, but Ortron soon has him under arrest again.
The Ice Warriors take control of the planet and force the miners to return to work but Ettis takes the opportunity to try and destroy the citadel.
Sarah and Alpha Centauri decide to try and alert the Federation to what the Ice Warriors are up to but first they have to escape from the throne room.
The Doctor turns the Aggedor spirit against the Ice Warriors to aid the Peladonians in their battle but Eckersley attacks him with the security system.
England, the near future. Mike Yates, formerly of UNIT, is disturbed by odd happenings at a monastic retreat. Using Sarah as a liaison, he is able to warn the Doctor and the Brigadier. But how is the Doctor's research into ESP and the blue Metebelius III crystal connected to Mike's warning?
A highly intelligent spider from Metebelius III arrives on Earth in search of the powerful crystal. When it is stolen from his laboratory, the Doctor leads the chase over land, water and air to recover it.
The Doctor and Sarah head to the meditation centre to try and get the crystal back while Lupton prepares to return it to Metebelis Three. But all their plans are disrupted when it is stolen by Tommy.
Sarah is captured by the spiders' guards while the Doctor tries to help Arak and the others strike back against the spiders.
The Doctor escapes from the spiders' larder only to encounter the Great One, while Sarah makes a deal with the Queen Spider.
K'Anpo persuades the Doctor he must face his fear and return the crystal to the Great One.But first they need to get past Barnes and his men.
The Doctor attempts to solve the mystery of the monster invasion. His first move - the capture of a dinosaur.
Yates sabotages the Doctor's equipment to stop him finding the location of Whitaker's base but then the tyrannosaur escapes, placing Sarah in danger.
Sarah attempts to find a way off the spaceship while the Doctor tries to track down the source of the time displacements.
The Doctor has been framed as the monster maker by Finch and is on the run from the army, while Sarah attempts to alert UNIT to what Grover is up to.
The Doctor is rescued from Finch by the Brigadier and Benton and tries to persuade them to stop Grover before millions of people are erased from history.
England, the near future. Something inhumanly strong and resilient is raiding scientific establishments across the country. Can the new Doctor help UNIT? And what are the staff of the secret government think tank working on in their spare time?
England, the near future. Sarah Jane Smith meets a gigantic robot, and the Doctor finds himself struggling for his life.
England, the near future. The Doctor attempts to thwart the plans of a group of unscrupulous scientists who threaten the Earth's destruction, and plan to use their giant robot to obtain the power they need to blackmail the world into obeying them.
England, the near future. The Robot grows to gigantic proportions and goes on a rampage. The Doctor finds the solution in a test tube.
Deep space, the distant future: following Earth's devastation by solar flares, the survivors of mankind are in cryogenic suspension aboard the Nerva Beacon space station. The Doctor, Sarah and Harry arrive on board to find the station suffering from mysterious damage and some manner of creature at large…
The planet Skaro, the distant past. The Time Lords divert the Doctor, Sarah Jane and Harry to this war-torn world, and give the Doctor a mission: the evil of the Daleks is about to be born here, and the Doctor is to try to ensure they evolve into less lethally aggressive beings - or, failing that, to avert their creation altogether. But has even the Doctor the right to commit genocide?
The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah Jane is captured by the Thals and taken to their city as a slave worker.
The Doctor and Harry head to the Kaled city to alert the authorities to Davros' plans while Sarah Jane and Sevrin are forced to work on the completion of the Thals' rocket.
The Doctor fails to prevent the Thals from destroying the Kaled city but they don't have long to enjoy their victory before the Daleks attack.
The Doctor is forced to give Davros full details of future Dalek victories but opposition to Davros' plans is growing among the Kaleds and soon there is open rebellion.
Gharman tries to convince the Kaleds to vote against the Dalek project but Davros has a trick up his sleeve, while the Doctor works to destroy the tape recording of Dalek victory and the Thals plan an intervention of their own.
The orbit of Jupiter, the 25th century. Arriving back on the Nerva Beacon much earlier in history, the Doctor and his friends discover the satellite beset by space plague while its crew struggles to keep space traffic away from Voga, the newest moon of Jupiter. But what is the connection between Voga, the plague, and some old enemies of the Doctor?
The orbit of Jupiter, the 25th century. Sarah Jane falls victim to the same plague as the other Nerva crewmen. With time running out, the Doctor transmats her and Harry down to the planet Voga, unaware that a mysterious ship is approaching the beacon.
The orbit of Jupiter, the 25th century. The Doctor and the Nerva Beacon crew are captured by the Cybermen, who plan to use them in their plan to destroy Voga, the Planet of Gold. The Cybermen promises them a slim chance of survival, but have no intention of keeping their words.
The Doctor manages to thwart the Cybermen's plan to destroy Voga by delivering Cyberbombs to the heart of the planetoid. But the Cyberleader has another plan, and the Doctor must convince the Vogans to give him enough time to rescue Sarah Jane before they launch their rocket.
Deep space, the distant future: following Earth's devastation by solar flares, the survivors of mankind are in cryogenic suspension aboard the Nerva Beacon space station. The Doctor, Sarah and Harry arrive on board and are greeted with suspicion by the awakening survivors… just as the menace of the insectoid Wirrn becomes apparent.
Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.
The Doctor tries to protect the humans still in cryogenic suspension from the Wirrn, who are determined to use Earth as their new breeding ground.
Earth, the distant future. Beaming down from the Nerva Beacon, the Doctor and his friends discover Earth is habitable once more. Unfortunately a robot is capturing a group of human soldiers on behalf of its mysterious alien master...
Earth, the distant future. Beaming down from the Nerva Beacon, the Doctor and his friends discover Earth is habitable once more. Unfortunately a Sontaran officer is conducting tests on a group of human colonists to determine their ability to withstand a full-scale invasion...
Scotland, the near future. Something is smashing oil rigs off the Scottish coast, and UNIT have been called in to investigate. The Brigadier summons the Doctor to Earth to help in the investigation, but it soon becomes clear some kind of alien presence is at work...
Scotland, the near future. Something is smashing oil rigs off the Scottish coast, and UNIT have been called in to investigate. The aliens responsible, the Zygons, try to kill the Doctor and Sarah Jane, then attempt to recover their signal device using their ability to mimic human beings.
The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah Jane discovers a secret tunnel to the underwater ship.
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.
The Doctor and Sarah answer a distress call and find themselves on Zeta Minor, the last planet of the known universe, where a Morestran expedition has gone missing.
The edge of the known universe, in the year 37,166. The Morestran crew believe the Doctor and Sarah Jane are responsible for the deaths of their personnel, but the Doctor warns that a greater danger threatens them and all the galaxy.
The Doctor and Sarah try to destroy Sutekh's rocket but the Osiran's mental powers prove too great for them.
Sutekh forces the Doctor to transport Scarman and a mummy to Mars, where the Doctor and Sarah try to stop them destroying the Eye of Horus.
The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.
The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes his virus.
The storm-lashed planet Karn. Near a graveyard of crashed starships, the demented surgeon Solon hides in his castle, the last acolyte of the Time Lord despot Morbius. He only needs one final item to make his master live again... and then the Doctor and Sarah arrive...
The Doctor is captured by the Sisterhood, and Sarah Jane is blinded freeing him. The Doctor has no choice but to go back for a cure, unaware that he is leaving Sarah Jane in the hands of a treacherous Dr. Solon and the renegade Time Lord Morbius.
While the Doctor goes to confront the Sisterhood to seek a cure for Sarah Jane's blindness, Solon realizes that he must transfer Morbius' brain into a new body before it is too late.
Morbius lives once more, but as a rampaging beast. The Doctor is forced to ally with Dr. Solon to bring him to heel, but the two disagree about what should happen to Morbius.
The Antarctic, the near future. A strange seed-pod is unearthed from 20-thousand-year-old ice. The Doctor and Sarah go to investigate, but are too late to prevent the pod infecting a scientist and unleashing a threat to all animal life on Earth...
Two employees of the millionnaire Harrison Chase arrive at the Antarctic base, and they will stop at nothing to get hold of the second seed-pod.
England: The 20th Century. After they return from England after their Antarctic ordeal, Chase tries to eliminate the Doctor and Sarah Jane, but they escape and track him down at his estate, where he is preparing to open the Krynoid pod.
England: The 20th century. The Doctor is captured by Chase, who plans to breed the stolen Krynoid pod. The Doctor is placed in an automated compost hopper and only Sarah Jane can save him...but will she make it before the Krynoid grows to fruition?
England, the near future. The Krynoid grows to monstrous size and traps the Doctor and the others in a cottage. The creature demands they turn over the Doctor, while Chase seeks to make an alliance with the alien vegetation.
England, the near future. The Doctor, Sarah Jane, and Scorby are trapped in the manor as a possessed Chase stalks them from within, while the gigantic Krynoid prepares to crush them from without. Worse, the alien plant is ready to germinate, spreading its seeds across England.
The Doctor makes a deal with the Anti-Matter Beast to return all the anti-matter to the planet but Sorenson is determined to continue his research.
The Doctor tries to convince Sorenson to sacrifice himself for the rest of the crew but Salamar's attempt to deal with the situation causes their problems to multiply.
The Doctor and Sarah are drawn off course and, instead of UNIT HQ, they arrive on the same site in 1911.
The Doctor, Sarah and Laurence try to find a way to sever Sutekh's link to the mummies while poacher Ernie Clements finds the priory surrounded by a forcefield.
Italy, 1492. The Doctor and Sarah arrive in Renaissance Italy unaware that they have brought a deadly alien energy force with them.
Italy, 1492. The Mandragora Helix establishes its power base with the Brotherhood of Demnos, while Count Federico plots against his nephew Giuliano, unaware of the danger that threatens them all.
Italy, 1492. Tempted by the promises of ultimate power offered by Mandragora, Hieronymous plots to eliminate the threat posed by the Doctor and uses an unwitting Sarah as his weapon.
Italy, 1492. As the leading scholars of the era assemble in the palace for the masque, Mandragora prepares to attack, intent on sending the world into a new dark age.
England, the near future. The TARDIS materialises in a quarry and Sarah is trapped under a rockfall. But what is the origin of the fossilized hand she is found gripping? And who is the Eldrad she keeps mumbling about?
The Doctor and Professor Watson struggle to stop first Sarah Jane and then Driscoll from obeying the strange and dangerous orders of the stone hand, which has suddenly come to life.
The Doctor has entered the computation Matrix to prove his innocence. But his opponent is prepared for him and the two engage in a mental duel to the death.
The Doctor has won his fight in the Matrix and revealed the assassin. But the Master is not defeated and sets a plan in motion that could destroy the Time Lords.
An unnamed planet, the distant future. Arriving in a place that seems oddly familiar, the Doctor finds the savage Sevateem tribe battling to free their captive god, Xoanon, from the Evil One and his Tesh servants. But can the whole situation really be the Doctor's fault?
The Sevateem launch another attack to try to free Xoanon as the Doctor tries to figure out his role in their past. But his only chance to win their trust is to face a deadly test.
The Doctor has broken through the barrier and found the Tesh. But he comes to an awful realization about Xoanon.
The Doctor tries to fix the mad computer Xoanon. But it is determined to stop him – even if it must destroy the entire world!
An unnamed world, an unknown time. A vast mining vessel trawls a sea of mineral sand for valuable ores, the tiny human crew served by an army of humanoid robots. But as the Doctor and Leela arrive, one of the crew is found murdered... and if they didn't do it, who did?
The Doctor and Leela are suspected of murder. But the real foe is using robots to cut down the crew – and even sabotage the sand miner itself!
Under the direction of a madman, the robots continue their rampage as the Doctor finds an unexpected ally.
The Doctor and the surviving humans fight for their lives againt Teran Capel and his growing army of deadly robots.
London, the 1890s. As magician Li H'Sen Chang captivates audiences, a spate of disappearances amongst young women goes largely unnoticed. But almost upon their arrival, the Doctor and Leela find themselves confronting the feared Tong of the Black Scorpion, and a menace from another time. And there's something fishy in the sewers, too...
The Doctor and Leela investigate the strange events in Victorian London. But a mysterious masked figure lurks in the shadows.
As Li H'Sen Chang works to secure the time cabinet, Leela pursues and investigates his master – the mysterious and murderous Weng-Chiang.
The Doctor and Leela attend Li H'Sen Chang's performance, hoping to confront the magician. But his master Weng-Chiang has other plans…
The Doctor and his allies try to track down Weng-Chiang before he can activate the time cabinet and possibly destroy London.
The Doctor and Weng-Chiang have their final confrontation in the mysterious House of the Dragon -- watched by the evil duplicitous Mr. Sin.
The energy of the reactor has returned the mysterious Eldrad to life. The Doctor agrees to take her back to Kastria. But what is waiting for them there?
The Doctor and Sarah race to save the mortally wounded Eldrad. But they find that everything is not quite as she told them.
Gallifrey, planet of the Time Lords. Summoned home by a premonition of murder, the Doctor discovers a dark conspiracy at the highest levels of Time Lord society... and his oldest enemy, who poses a threat to the existence of Gallifrey itself...
The President of the High Council has been killed and the Doctor is the prime suspect. The Time Lords are eager to dispense quick justice and the Doctor must race agains the clock to discover the truth... and an old enemy.
The English channel, the 1900s AD. The TARDIS lands on barren Fang Rock, inhabited until now only by three light-house keepers. But what is the strange fog covering the island, and can it be connected to the falling star sighted earlier that night?
The survivors of a wrecked ship are stranded with the lighhouse crew on Fang Rock as a deadly menace slithers through the fog. Has the Beast of Fang Rock returned?
The Doctor barricades everyone in the lighthouse to protect them from the mysterious deadly creature in the fog. But it may already be inside, biding its time…
The Rutan starts picking off the surviving humans one by one as the Doctor and Leela struggle to defeat not only the alien but an entire fleet waiting to occupy Earth.
Deep space, 5000AD. An Earth supply shuttle is infected by a strange sentient space-borne virus, which quickly spreads to the crew of the refuelling station on the moon Titan. Even worse, the Doctor himself falls victim. But why is Leela immune, and what is the virus's ultimate goal?
Leela and Lowe take the Doctor to the Bi-Al Foundation for help. But how can they cure an infection of the mind?
Miniaturized clones of the Doctor and Leela are injected into his brain. But they must now fight the virus on its own level. And its servants are closing in around them.
The Nucleus, now grown to human size, is determined to spawn and take over the Galaxy. Only the Doctor and Leela can stop it.
England, the late 1970s. At Fetch Priory, Dr Fendelman's experiments with the new Time Scanner are disrupted by the mysterious death nearby of a hiker. Then there's the mysterious skull, also being used as part of his work--a skull that seems to predate the evolution of mankind. What is the true role of the Fendahl in humanity's evolution?
The mystery surrounding the strange skull deepens. Thea is slowly succumbing to its influence while the Doctor prepares to battle a creature from mythology.
While Max prepares to tap supernatural forces beyond imagining, the Doctor and Leela investigate the legend of the Fendahl.
The Fendahl is returning to life, ready to consume everything in its path. Can the Doctor find a way to kill death itself?
Pluto, the distant future. The planet has been terraformed and is now orbited by artificial suns, provided by the rapacious company who ruthlessly exploit the relocated human workforce. The Doctor, Leela, and K9 arrive and befriend a luckless drone worker, but they must flee with him to the dark undercity...
The Doctor has been captured by the Gatherer. Leela works to free him but the Gatherer is already laying his own plans…
Now Leela is the prisoner of the Collector. He knows of the Doctor and is determined to rid himself of both of them.
The Doctor now moves to completely overthrow the Company. But the Collector has one last trump card to play.
Deep space, an unknown time. The Doctor encounters the Minyans, survivors of a race the Time Lords unwittingly obliterated early in their own history. The Minyans are searching for their race's lost gene banks, a quest which takes them to the edge of the galaxy…
After 100,000 years, the Minyans have found the long-lost P7E. But what awaits them on the ship, long buried in the core of a newborn planet?
The Minyans have, at long last, found the P7E. But a host of guards and robotic seers stand between them and the race banks.
The Minyons struggle to gain the precious race banks from the Oracle. But perhaps it is giving in a little too easily ...
Gallifrey, world of the Time Lords. The Doctor returns and claims the vacant presidency. But his behaviour is erratic and his motives mysterious.
Now President of Gallifrey, the Doctor puts a plan motion to apparent betray his people to an alien menace.
Gallifrey, world of the Time Lords. The Doctor has claimed the presidency of the planet (on a technicality, following events in the previous season's The Deadly Assassin) and his behaviour is even more eccentric than usual in other ways, too: he refuses to speak to Leela and seems only to trust K9. But has he really betrayed Gallifrey to a Vardan invasion force? And is there a further power behind the Vardans?
The Doctor works to free his planet of the Vardan menace. How can he defeat an enemy who can read his very thoughts? And does their invasion conceal a greater menace?
The Sontarans have invaded Gallifrey, seeking to seize the incredible power of the Time Lords. The Doctor's first step is to cut them off from their fleet. But Kelner is helping the enemy…
The Sontarans finally invade the TARDIS itself, seeking the Great Key. The Doctor, however, has other uses for this powerful object…
The Magellanic Clouds, the planet Ribos, an unknown time. Ordered by the White Guardian to collect the pieces of the omnipotent Key to Time, The Doctor, K-9 and his new assistant Romana arrive. Collecting the first segment is not going to be easy…
Trying to obtain the first segment of the Key to Time, the Doctor and Romana are swept up in an elaborate con. The target – the homicidal Graff Vynda K.
Prisoners of the maniacal Graff Vynda K, the Doctor and Romana must break out and pursue the first segment – even as Unstoff takes it into the most dangerous place on Ribos.
Trapped in the catacombs between a mad warlord and ravenous monsters, the Doctor and Romana work desperately to obtain the segement of the Key to Time - and escape alive.
Planet Zanak, unknown time. The Doctor and Romana are seeking the planet Calufrax where the second segment waits. They are in the right place and the right time… but on the wrong planet.
The Doctor begins to investigate the mysteriously wealthy planet Zanak. Mentiads, a deranged Captain, strange omens, miraculous mines – what does it all mean? And what does it have to do with the Key to Time?
The Doctor and Romana begin to uncover the secrets of Zanak. But the murderous Captain seems to have plans of his own.
The Captain and Xanxia work toward their secret goals. Both depends on the pirate planet consuming one more victim - Earth.
England, the late 1970s. The Doctor and Romana arrive in search of the third segment. But the Tracer readings are erratic and something ominous is happening with an ancient stone circle...
The quest for the Third Segment has landed the Doctor and Romana in the midst of a druidic cult centered on a stone circle. But the stones are not what they seem. And somewhere out there is a blood-thirsty celtic godess.
Chase by blood-thirsty stones, the Doctor must find a way to rescue Romana. What awaits him in the theoretical absurdity of hyperspace?
Facing a sentence of death from merciless justice machines, the Doctor must play for time while Romana tries to discover just who Vivian Fey really is.
Arriving on the techno-Ruritanian world of Tara, Romana easily obtains the Fourth Segment. Getting off the planet, however, isn't going to be quite so easy...
The Doctor must employ a desperate gambit to keep the evil Grendel off the throne. And the Count has a new pawn to play - Romana.
The Doctor and Romana are swept up in the political machinations of Tara. The Doctor must keep the android "king" running while Grendel plots to use Romana to destroy him.
Grendel plans two weddings and a funeral to cement his hold over Tara. The Doctor and K-9 race to foil him and save the Time Lady's life.
The Third Moon of Delta Magna, The Future. The Doctor and Romana arrive in search of the fifth segment and are immediately swept up in a conflict between the crew of a new refinery and the embittered natives…
The Doctor and Romana try to avoid being sacrificed to Kroll – just in time for the real monster to appear.
The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it – by sacrificing the Doctor and Romana.
The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander. And there is no sign of the fifth segment of the Key to Time.
Searching for the sixth segment, the Doctor and Romana land in the midst of a brutal nuclear war between the planets Atrios and Zeos.
Swept up in an apocalyptic war, the Doctor must help the Marshall defend his planet. But who or what controls the Marshall?
The Doctor meets a new enemy – the Shadow – who wants the Key to Time. And the Atrian-Zeon war is approaching an awful climax.
The Doctor is forced into a desperate gambit to prevent a massacre. But it is getting harder to tell friend from foe.
The Doctor and Romana finally venture into the Shadow's lair. The Shadow appears to hold all the cards but the Doctor has found an old friend.
The Doctor and the Shadow have their final confrontation to take control of the Key to Time. Completing it may entail an awful sacrifice. And the Black Guardian will do anything to obtain it and plunge the Universe into chaos.
Skaro, the Dalek homeworld, some time in the future. The TARDIS lands in the irradiated ruins of the old Kaled city and something is moving underneath the wasted surface of the planet…
Romana has been captured by the Daleks, the Doctor is the guest of the Movellans. The Daleks are drilling deep into Skaro for something and the Doctor has an awful suspicion about their objective…
The Daleks have awoken Davros in the heart of Skaro. Only the Doctor and the Movellans stand between them and their objective. But are the Movellans really on the Doctor's side?
Trapped between the Movellans and the Daleks, the Doctor must find a way to defeat both. Meanwhile, vast space fleets await new orders.
Paris, 1979. The Doctor and Romana are here on holiday, but something is disturbing the flow of time. Could the time travel experiments of Count Scarlioni be to blame?
Captured by the Count, the Doctor and Romana uncover an elaborate plan to steal the Mona Lisa. But there is more to Scarlioni's plans than a simple theft.
The Doctor and Romana unwrap an intricate plot involving aliens, time travel and the Mona Lisa. How is Count Scarlioni living in two times at once? And what does he want?
Scaroth is determined to go back 400 million years in time to prevent a mistake. But the Doctor must stop him – because the consequences would be disastrous.
The planet Chloris. Drawn here by a mysterious distress signal, the Doctor becomes the prisoneres of the ruthless Adrasta. A strange and deadly pit await those who displease her.
The Doctor is in a pit with a deadly creature. And Adrasta has plans for Romana and K-9.
The Doctor has come face to face with a massive green creature. Adrasta goes into the mines to kill the monster. But everything is not as it appears…
The truth about the creature is revealed. But its imprisonment may have already set in motion a terrible revenge.
The orbit of the holiday planet, Azure, the year 2116. The starships Empress and Hecate are fused together after an accident in hyperspace. Naturally the Doctor thinks he can find a solution, but has the accident unleashed a far more deadly menace?
Two ships have collided above Azure but that may be the least of the Doctor's problems. Monsters and drug smugglers are loose on the ship. And it all seems to tie in with Tryst's electronic zoo…
The Doctor and Romana begin to uncover the truth about the strange events aboard the luxury liner Empress. They first have to separate the two ship from each other. But they've got Mandrells, drug smugglers and police chasing after them.
The Doctor finally discovers the truth about the drug smuggling ring. But the villains are still one step ahead.
Deep space, an unknown time. The TARDIS encounters a disabled Skonnon battlecruiser transporting Anethan 'tribute'. The co-pilot is determined to reach Skonnos at any cost.
Having reached Skonnos, Romana is sent with the Anethians to face the deadly Nimon.
The Doctor and Romana are trapped in the Nimon's lair. Is he really the last of his race? What are his real intentions toward Skonnos?
Romana is trapped on a ruined planet. The Nimons are launching their invasion of Skonnos. Can the Doctor stop the "Great Journey of Life"?
The Doctor and Romana have unfinished business in Cambridge, 1979, with the elderly Professor Chronotis.
'Beware the sphere. Beware Skagra. Beware Shada. The secret is in the...' What can the Professor's cryptic last message mean?
Without the Professor, the Doctor and Romana are forced to think on their feet. But what large invisible object lurks nearby?
The Doctor, Chris and K9 race to rescue Romana from Skagra. Claire makes a startling discovery about the Professor's rooms.
Answers come think and fast, but no explanation can prepare the Doctor, Chris and K9 for what they find on Shada.
Things look desperate. Skagra is almost within grasp of Salyavin's power. Can the Doctor save the day with his special helmet?
The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific deaths seems to jeopardise that future - can the Doctor and Romana find a solution?
Another man is found dead, strangled by the Doctor's scarf, so the Doctor is put on trial. By some of the archaic rules of law, he's made to "prove" his innocence by becoming a test subject in a new tachyon experiment with time. The result will prove his innocence or guilt, so they say.
With the Doctor suffering from the time experiment, the clandestine schemes of others start coming to light, along with the secreted purposes to which the tachyonic generator has been used.
With the saboteur and murderer revealed and arrested, peace should now be restored, but a new threat emerges - a war-monger who's both ready and eager to aggress upon other worlds with a newly manufactured warrior army.
The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...
With the TARDIS occupants trapped in a chronic histeratic loop (forever reliving the same moment in time), the devious Meglos - disguised as the Doctor - gains the trust of the Tigellans along with full and private access to their power chamber.
Can Romana escape the Gaztaks ? What has become of the Dodecahedron ? What pressing appointment awaits the Doctor ?
With the Doctor about to be ritualistically sacrificed to appease the god Ti for stealing the dodecahedron, Meglos and the pirates return to Zolfa-Thura with the dodecahedron to fire up an ancient weapon and blast Tigella out of existence.
Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...
As the humanoid community takes refuge in their crashed spaceship, venomous marsh spiders begin to hatch from the local fruit while bestial marshmen emerge from the waters to walk the land. It is quite apparent that the marshmen desire entry into the spaceship. Meanwhile, as a curious marshchild shadows the Doctor, a group of teen rebels decides to take over the TARDIS.
Infection from a spider bite causes Romana's personality to change. Meanwhile the Doctor, after discovering that the spaceship society is in a perpetual state of repair and upgrade, has morality issues with the ship's leading scientist who readies himself to perform gruesome experiments on the live marshchild while it's fully conscious.
Marshmen invade the Terradonian ship thanks to Romana, who seems to be in communion with them. While the ship's inhabitants flee for their lives, the Doctor discovers a crucial fact why these humanoids can never return to the planet Terradon.
Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world...?
The Doctor and Romana are escorted to the tower to meet the royal leaders, hoping they can find answers to why this society evolves backwards. The Doctor recognizes the tower as an old Earth spaceship, and further finds that the old fuel tanks, far from empty, are full - but with blood. Meanwhile, Councilor Aukon senses intelligence in Adric and selects him to be the their first "Chosen One."
The Doctor finds archive material in the TARDIS that tells him he's dealing with an ancient enemy of the Time Lords, a nearly indestructible king vampire who's ready to revive and reenter normal space, spreading death, once again, across the universe.
The Doctor joins the villagers' revolt against their vampire rulers, unsure how to kill the king vampire. Meanwhile Adric is first in line to join the new vampire order while Romana is laid out as a sacrificial Time Lord for the awakening king vampire and his swarm of bats.
The TARDIS is drawn into an empty white void, somewhere between universes. But they are not the only ones trapped there.
When Rorvik learns that Romana is a time sensitive, he takes her prisoner, forcing her to find a way out of the void. The Doctor attempts to discover what lies beyond the mirror.
While Biroc leads the Doctor to a view of the Tharil's lordly past, Romana learns more about the damaged freighter and the coldheartedness of its crew. Meanwhile Commander Rorvik, confounded by the time mirror inside the universal center gateway, ignores evidence that it's no simple mirror and decides to blast it, imperiling the lives of everyone.
The Doctor deduces that the freighter is a slave ship loaded up with Tharils to be sold as time machine components, but the immense weight of Rorvik's damaged ship, designed to contain the Tharils, is now collapsing the fragile void of the micro-universe in which they're all stuck, pulling everything inside ever closer.
The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?
Tremas claims consular privilege to protect the Doctor and Adric from execution, though it binds his fate to theirs if they're found guilty of murder. Melkur strengthens his hold over Kassia while Seron decides to have rapport with The Keeper to learn truth, and Adric finds evidence of another TARDIS in the area.
With Tremas falling under suspicion, due to his association with the Doctor, a new Keeper Nominate is named. Now, with everything in place, Melkur has only a short wait before his full malevolence can unfold.
With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.
Deciding to repair the TARDIS' chameleon circuit, the Doctor goes to Earth to find a real police box. But an old enemy is one step ahead of him.
The Doctor, aware that his time may soon be ending, travels to the Logopolis where a series of fateful events are set in motion.
With Nyssa from Traken unexpectedly rejoining the group, Adric aids the Monitor of Logopolis in trying to save the Doctor before time runs out. The Master, at liberty to prepare, is finally ready to reveal his true target, which unknowingly sets off the biggest catastrophe of all time.
With the universe collapsing, the Doctor forms an uneasy alliance with the Master to save it. In case all does not go well, the Watcher takes the Doctor's companions to a safe place, but his plans for them don't stop there. The one hope for all lies back on Earth.
Southern England, 1981. The universe has been saved, but at the cost of the fourth Doctor's life. The newly-regenerated fifth Doctor must rely on his friends to survive as the regeneration threatens to fail…
The TARDIS is plunging toward destruction. But even if the Doctor can escape, is yet another trap waiting?
The Doctor has arrived in the supposed safety of Castrovalva. But something is odd about the seemingly tranquil city…
The TARDIS crew are caught in a space-time trap. Escaping will mean a final confrontation with the Master.
Deep space, four days from Earth, 1981. The TARDIS materialises aboard a massive Urbankan starship. What is the real agenda of Monarch, master of the vessel?
The Doctor and his companions explore Monarch's vessel. But what is the secret of the ancient Earthlings aboard?
Bigon reveals Monarch's terrible plan to the Doctor. Can he act in time to save Nyssa? And which side is Adric on?
The Doctor has little time left to stop the evil Monarch. But he is losing allies — and the TARDIS is gone.
The TARDIS lands on the jungle planet Deva Loka, where an Earth expedition has been sent to study the Kinda, a tribe of primitive people. Three team members have already vanished. Are the Kinda as primitive as they seem?
Sanders meets Panna and Karuna who leave a lasting impression on him, while the Dukkha does the same on Tegan. When Hindle's breakdown begins, the Doctor and Todd are in danger.
Aris now carries the mark of the Mara and has gained voice, so Panna shows the Doctor and Todd exactly what the past, present and future hold for Deva Loka.
As the Mara finally breaks free of its dream dimension, the Kinda must do everything they can to contain it. Hindle's need to destroy everything and everyone is unstoppable.
As plague sweeps 17th century England, the Doctor discovers a more exotic threat at work - shipwrecked Terileptil convicts, intent on making the planet their own.
To rescue Tegan and Adric, captured and interrogated by the Terileptil fugitive leader, the Doctor must get past the locals under alien control and overcome Death (an android servant dressed up as The Grim Reaper).
The Doctor makes the fugitive Terileptils a rare offer they shouldn't refuse; but, though few in numbers, they have a plan in the works for the quick and complete domination of Earth and mean to see it through.
With Tegan and Richard under alien control, and the manor sealed against anyone leaving or entering, it's a question whether or not the Doctor can get to London before the Terileptils release their improved strain of black death upon the world.
The TARDIS arrives on Earth in 1925 where, due to a case of mistaken identity, the Doctor ends up playing in a local cricket match, but events take on a more sinister tone at the country home of their host Lord Cranleigh.
Ann escapes her Harlequin-clad abductor but it's The Doctor whom she accuses. Strangled bodies mount and The Doctor is arrested along with "accessories" Tegan, Nyssa and Adric. Will Lady Cranleigh's secret come out?
The TARDIS crew arrives on Earth in the 26th Century in a cave system where a military force is investigating the disappearance of a palaentological expedition.
With her crew vanishing mysteriously, Captain Briggs assumes the Doctor is the guilty party, but the traitor is closer to home… as are the Cybermen.
The Cybermen are released from their silos and are on the march, attacking Briggs's crew and ensuring that the freighter remains on course for Earth. But why?
The Doctor realises the freighter is now a huge bomb and sends it back through time where it can explode millions of years ago... but Adric is still aboard...
A Concorde loaded with passengers and crew vanishes into thin air. The still-grieving TARDIS crew arrive at Heathrow Airport in 1981 as the Doctor volunteers his services to solve the mystery.
The Doctor's TARDIS is stolen, and tracking it down reveals the existence of an alien named Kalid controlling events in the past. While the Doctor challenges Kalid's motives for being there, Tegan and Nyssa discover the source of Kalid's power - an even greater threat for the Doctor.
A Concorde loaded with passengers and crew vanishes into thin air. The still-grieving TARDIS crew arrive at Heathrow Airport in 1981 as the Doctor volunteers his services to solve the mystery.
The Master's TARDIS is repaired and the Doctor must follow him back to 20th century Heathrow, once he has rescued all the passengers and crew from both Concordes.
On Gallifrey, someone on the high council is perpetrating a treasonous act - transmitting the Doctor's bio-extract from the space/time matrix to an anti-matter being. On Earth, two English lads spend their last night in Amsterdam sleeping in a crypt where they're attacked by an alien creature under the same anti-matter being's control.
With an anti-matter being trying to enter the universe through the Doctor, risking the destruction of everything, there is only one clear course of action for the High Council of Time Lords to take: execute the Doctor. Meanwhile, Tegan arrives in Amsterdam and hears about what's become of her cousin from his unscathed friend.
Something seemed amiss about the Doctor's execution, so the Castellan has Commander Maxil discreetly but fully look it. Meanwhile, as the Doctor meets the anti-matter being inside the Time Lord Matrix, Tegan and her cousin's friend run afoul of a bird-like alien back on Earth.
The High Council creates a distraction so the Doctor and Nyssa can find Omega on Earth and prevent his reentry into our universe.
Tegan steers the TARDIS to the planet Manussa, without meaning to - but why? And is it a coincidence that the planet is about to celebrate the 500th anniversary of the expulsion of the insidious Mara?
The Doctor talks to Ambril and Chela to try and stop the 500th anniversary celebrations. A possessed Tegan finds herself in Dugdale's Hall of Mirrors to where she summons Lon. The Doctor and Nyssa return to the caves.
The possessed Tegan and Lon try to find the whereabouts of the Great Crystal. The Doctor finds himself in prison, with only Nyssa to try and get him out. Chela tells the Doctor tales of Dojjen.
The Doctor and the original snakedancer Dojjen work to rid the planet of the Mara.
The Doctor discovers a starship trapped in a time warp over Earth. Meanwhile, public schoolboy - and secret alien émigré, Turlough, learns he can have that which he most desires, in return for the murder of the Doctor...
The TARDIS lands on Earth six years out of date, stranding the Doctor in 1983 while leaving Tegan and Nyssa to look for him in 1977. Both parties also encounter former companion, Brigadier Lethbridge-Stewart, though curiously, he has no memory of the Doctor at all.
The Doctor discovers a starship trapped in a time warp over Earth. Meanwhile, public schoolboy - and secret alien emigré - Turlough learns he can have that which he most desires, in return for the murder of the Doctor...
As the Doctor's ethics are challenged and the two Brigadiers finally meet, Turlough plots with the Black Guardian to bring the Time Lord down once and for all...
Deep space, some time in the future. Still following the Black Guardian's orders, Turlough sabotages the TARDIS, forcing an emergency fusion with an apparently deserted starship. But the ship is headed for the notorious plague colony, Terminus. Surrounded by plague victims and space pirates, is the Doctor too preoccupied to notice the greatest threat of all - a threat connected to the position of Terminus at the exact centre of the universe?
The Doctor's party remains divided and scattered as the immense transport docks at the Terminus space station, which turns out to be a leper colony at the exact centre of the known universe. As they find their way around and investigate, Nyssa shows signs of contracting the disease.
Since the Doctor's party represents neither lazars nor handlers, they're presumed to be investigators, which is enough to spark the disgruntled Valgard into challenging Eirak over leadership of the handlers. Meanwhile, as the giant, dog-like Garm takes a terrified Nyssa off for "treatment," Bor returns from the forbidden zone with interesting news about the ship.
In attempting to reopen a doorway into the TARDIS, Turlough activates Terminus' automated fuel-jettisoning sequence. The first time this sequence was engaged, it flung its first of two massive loads of unstable fuel into the distant past, producing the Big Bang that created the universe. This second sequence - if the Doctor can't find a way to shut it down - will release a second massive load, the explosion of which will entirely negate the effects of the first.
After receiving a warning from the White Guardian, the Doctor initially believes the TARDIS has landed aboard an Edwardian clipper ship - but all is not as it seems. While the time travellers are caught up in the omnipotent Eternals' race for the ultimate prize, the Black Guardian's scheme to destroy the Doctor enters the end-game - but which side is Turlough a pawn of?
Captain Striker and his officers reveal themselves to be Eternals, mind-reading creatures who live outside of time and who require Ephemerals (humans and other "time dwellers") to relieve them of their emptiness. They race against other Eternals for the grand prize of Enlightenment, by which to grant their deepest wishes. That can't be good for the universe, but how can the Doctor strategise against beings adept at reading his every thought?
Turlough's panic puts him aboard a pirate ship where Captain Wrack uses his presence to invite all the other captains over for dinner. She's been picking off a few of her greatest rivals in the race and now sees an opportunity to clear the field once and for all and become the clear winner.
Tegan isn't aware she been outfitted with a device to destroy Captain Striker's ship. While the detonation will merely slip the indestructible Eternals back into the realm of eternity, nothing nearly so elegant or as tidy awaits the Ephemerals aboard the ship.
England, 1215. With the historic signing of the Magna Carta supposedly only days away, the Doctor is startled to find King John apparently intent on provoking civil war - and seemingly in two places at once...
England, 1215. At the castle of Ranulf Fitzwilliam, son Hugh is jousting on a matter of honor against Sir Gillis Estram, the champion of King John, when the TARDIS appears. The Doctor, Turlough and Tegan are immediately hailed as demons and welcomed warmly by the King. Something is wrong with this picture, observes the Doctor.
Gallifrey, planet of the Time Lords. The Death Zone, where the ancient Gallifreyans once staged gladiatorial games between alien races from throughout the universe, has been reactivated. No less than three of the Doctor's former incarnations and several of his companions are brought here. But why? And who is the Player in the Game of Rassilon?
Seabase 4 is on alert as a strange craft approaches. But the crew has been infiltrated by the enemy, so Commander Vorshak's solutions are scuppered at every turn.
The Silurians and Sea Devils send in the Myrka to spearhead their invasion of the Seabase. Meanwhile, Nilson and Doctor Solow work to bring the entire Bloc down...
As Vorshak's crew are cut down by Sauvix's Sea Devil Warriors, the Doctor is running out of ways to broker a peace between the opposing species.
Earth's ocean floor, 2084. With two superpowers poised on the brink of a devastating photonic war, a missile base comes under attack from the reptilian Sea Devils and Silurians, intent on eradicating the upstart human race and reclaiming the planet...
The sleepy English village of Little Hodcombe, 1984. The village re-enactment of the English Civil War is in full swing, but a malign alien presence intends the mock-battles to be rather more realistic than planned...
The Malus, an alien that's purely evil, needs the civil war re-enactments to become authentic so it can feed off the psychic energy of dying and embattled men and fully revive. Not if the Doctor can derail things, of course.
The planet Frontios, in the distant future. Following Earth's destruction, a tiny colony struggles to eke out a life on this desolate world. But where do the bombardments that threaten them originate from? Little does the Doctor suspect that somewhere nearby lurks a power capable of ripping even the TARDIS apart…
Following the destruction of the TARDIS, the only part of it left is the hat stand. So Turlough uses it as a weapon! Plantagenet gets swallowed by the earth, and Norna and Turlough discover the Tractators.
Trying to rescue the Doctor from the Tractator's trap, Tegan lands them both in even more trouble. Turlough goes a bit mad, and reckons he knows the evil of the Tractators from old.
The Doctor tries to deal with the Tractator's cunning plan, despite Turlough's best intervention. They discover the splintered TARDIS in the tunnels beneath the planet's surface, but how will they put it together again?
London's Docklands, 1984. Why are uniformed policemen gunning down strangely-dressed vagrants in broad daylight? A prison ship in the far future - who is the sole prisoner aboard the craft? And why are these two locations linked by the time corridor the TARDIS has been sucked into? Lytton's men revive Davros as the Doctor fights off the Dalek in the warehouse. But alliances are shifting with each passing moment. Can anyone be trusted?
As the surviving station crew work to destroy the space station, Davros consolidates his power and the Daleks launch a fiendish scheme to use the Doctor against the Time Lords. The Doctor and his companions strive to defeat both Davros and the Daleks. But their victory may come at a terrible price.
Lanzarote, 1985. Archaeologist Howard Foster raises a strange metal artefact from the sea floor. But how is it linked to the signal the TARDIS received? Why is Turlough suddenly so worried? And why is Kamelion acting so erratically?
While the Master, victim of his own attempt to improve his TCE weapon, seeks restoration through Sarn's numismaton gas, the truth of Turlough's past comes out at last, though to guarantee the safety of his brother and the Sarn people, Turlough must consider a great personal sacrifice.
Sarn prophesy foretells of an outsider who will come to aid the people. It's a role the Master is more than delighted to fill, which finally presents Timanov, the Sarn religious leader, the unbridled support he's sought in his campaign to cull the faithless from among his people. Turlough's secret past, however, is somehow intricately involved in all this, and the reluctance of its disclosure is enough to threaten all friendly ties with the Doctor.
While the Master, victim of his own attempt to improve his TCE weapon, seeks restoration through Sarn's numismaton gas, the truth of Turlough's past comes out at last, though to guarantee the safety of his brother and the Sarn people, Turlough must consider a great personal sacrifice.
The planet Androzani Minor, the distant future. In the planets' caves war rages between government troops and the android warriors of the mysterious Sharaz Jek. But what makes spectrox, the substance they battle to control, so valuable? And how far will the Doctor go to protect his companion?
The Doctor and Peri have been rescued from the firing squad by the mysterious Sharaz Jek. But he has his own plans for them. And why are they suddenly feeling ill?
The situation on Androzani Minor is building toward a violent confrontation. And the Doctor and Peri are slowly succumbing to spectrox toxemia.
Events on Androzani reach a bloody climax. Will the Doctor and Peri survive the carnage? And at what cost?
Earth, the future. The genius Sylvest twins, child prodigies, are kidnapped by the mysterious Professor Edgeworth and taken to the planet Jaconda. But who is Edgeworth? Why does he serve the giant slug Mestor? And what is Mestor's plan?
The Doctor takes Peri to Titan 3, a desolate hunk of rock in space where he hopes to find some solitude for a while. Instead he finds the lone but unconscious survivor of a recent spaceship crash in sight of a mound-shaped complex where no formalised structure should exist.
The Doctor arrives on Jaconda, once lush and green, to find it completely devastated by giant gastropods. Old legends about the planet's half-human/half-slugs weren't just myths after all. With or without help from the Doctor and his unpredictable mood swings, Lt. Lang is up for rescuing the twins, who are finally informed of the grand purpose they've been brought to Jaconda to accomplish.
The Doctor and Edgeworth deduce that the real plan of Mestor, the gastropod ruler of Jaconda, will not only destroy Jaconda but lead to the devastation of other planets. Together they hope to thwart him despite his formidable ability at slipping into people's minds and controlling them.
London, 1985. The alien mercenary Lytton has been stranded here for nearly a year, but now he has a plan to escape. But how does it involve the Doctor's old enemies - and why are they on Earth at this point in history?
On Telos, the Doctor is reintroduced to the Cyber Leader and meets the Cryons, the planet's original inhabitants who will go to any lengths to get their world back!
The former prison planet Varos, the future. The downtrodden population of miners are kept happy by real-life violence and murder broadcast live from the Punishment Dome. But then the TARDIS materialises inside the Dome...
The Governor forces the Doctor to tell him the true value of zeiton-7 but Sil attempts to derail his plans by subjecting Peri and Areta to an enforced mutation.
England, the 1820s. As the Industrial Revolution gathers pace, the village of Killingworth is disturbed by crazed Luddite miners intent on smashing all machinery and engineers. But is there another cause of the situation?
The Master uses The Rani's mind-controlling parasites to keep a meeting of Earth's leading scientists from being cancelled, and helps her plant transformation land mines for The Doctor, as he continues to propose an alliance with her in ruling over Earth.
The alien space station J7, the mid-1980s Earth time. The Time Lords have sent the second Doctor and Jamie here to try to stop dangerous experiments into time travel. But the station comes under attack from the Sontarans and far away in space and time the sixth Doctor goes into psychic shock...
The Doctor and Peri meet Jamie and learn the Second Doctor is with the Sontarans on Earth.
The Sontarans prepare the Second Doctor to trigger their Kartz-Reimer capsule.
The planet Karfel, in the distant future. The tyrannical Borad rules with an iron fist, and any who oppose him are cast into the Timelash - a space-time tunnel leading to the past of an alien world called Earth...
The Borad accepts no opposition and enables Maylin Tekker to expose the rebels and trap Peri with the Morlox. The Doctor tries to avert a war between Karfel and the Bandrils.
The planet Necros, the future. The Doctor arrives for the cryogenic interrment of an old friend at Tranquil Repose, a vast repository of bodies in suspended animation. But what does the 'Great Healer' really have in mind for them...?
The planet Necros, the future. The Doctor arrives for the cryogenic interment of an old friend at Tranquil Repose, a vast repository of bodies in suspended animation. But what does the 'Great Healer' really have in mind for them...?
The Doctor is taken "out of time" by the Time Lords and made to face an inquiry into his meddling in the affairs of others, overseen by the Inquisitor. The prosecutor, the Valeyard, soon has the proceedings upgraded to a trial for the Doctor's life. Evidence takes the form of recordings of the Doctor's recent adventures, beginning with his visit to the mysterious world of Ravalox and an encounter with Andromedan space pirates...
The Doctor has an appointment with the Immortal, while Peri finds herself caught up with Glitz and the Tribe of the Free. Meanwhile, Merdeen begins to question all he believes.
The Doctor escapes to rejoin Peri on the surface but shortly becomes the prisoner of a surface-dwelling tribe called The Free. Ravalox isn't Ravalox after all, but before the Doctor can learn much more an irresistible agent from UK Habitat comes to fetch him back.
All those on Ravolox are in exponentially greater peril than anyone can comprehend. If anything in the entire universe is to survive, it may come down to the Doctor arguing against machine logic over the value of life.
The Doctor's trial continues. The Valeyard's next piece of evidence for the prosecution concerns the Doctor's recent trip to Thoros Beta. Though originally investigating arms dealing, the Doctor and Peri become embroiled in their old enemy Sil's alarming neurological experiments...
The scientist Crozier keeps making empty promises and Yrcanos and Peri are seemingly betrayed by the addled Doctor who is sure the Matrix is being manipulated...
While the Doctor helps Dr. Crozier transfer Lord Kiv's brain into a new host skull, Peri accompanies King Yrcanos as he searches for the Alpha Resistance fighters whom he feels, most certainly, will follow him into glorious battle against the Mentors and the Doctor.
As the Possidor Ambassador visits, Sil is appalled to realise Crozier has selected Peri to be the Kiv's new host body - a move Yrcanos takes exception to with devastating results.
With the prosecution case concluded, the Doctor begins his defence, an adventure from his own future. Aboard the starliner Hyperion 3 in the year 2986, trouble is brewing. A murderer is aboard - and something very nasty's stirring in the hydroponics bay...
As the Hyperion III continues its journey, more mysterious deaths occur.
A course change that takes the Hyperion III closer to a black hole could prove unwise when there are so many aboard ship with hidden agendas. Disappearances continue, a murderer remains at large, and one person finally crumbles under the strain of harbouring a guilty secret.
With factions vying for control of the ship, the Vervoids are found to be responsible for the many disappearances. Only the Doctor sees the fundamental but missed point as to why they can't be reasoned with or why they can't be allowed to arrive on Earth.
With the Doctor now reluctantly admitting to genocide, things look bad. But the Doctor's nemesis, the Master, intervenes, and the real truth behind the trial comes to light - and with it, the shocking secret of the Valeyard's true identity...
The final part of this epic adventure. The Doctor and the Valeyard have entered the world of the Matrix. Can the Doctor defeat the evil incarnation of himself?
The alien world of Lakertya. With the aid of the savage Tetraps, the Rani has conquered this planet to allow her to continue her depraved biochemical experiments. But she finds herself needing the Doctor's assistance...
The Rani's impersonation of Mel backfires badly because Urak can't tell the difference, while the Doctor attempts to learn the secret of the Loyhargil.
The solstice nears, making it time for the Rani to bring her plans into fruition. The Doctor's sympathies for Beyus, ruler of the Lykertyans, are rather qualified. Beyus' heart is for his people yet something prompts him to collaborate fully in helping the Rani reach all her objectives. The answer, he's told, lies within the Center of Leisure.
The Rani, at last, links the Doctor into her great brain machine, the crowning jewel in her component packet of geniuses brought together to turn Lakertya itself into one vast cerebral mass capable of redirecting time anywhere in the universe, giving her absolute power over all creation.
The legendary Paradise Towers is supposed to be the height of luxury but when the Doctor and Mel arrive, they find it is as far from paradise as possible...
With the Doctor condemned to death by the caretakers and their bizarre rulebook, Mel faces cannibalistic OAPS. Is Pex going to be the true hero of Paradise Towers ?
Mel and Pex play cat and mouse with the lethal cleaner robots while the Doctor and the surviving Kangs learn all about Kroagnon the Great Architect.
Meeting up at the pool, the Doctor leads the surviving Rezzies, Kangs and Caretakers as they draw the line together on the 245th floor against the systematic cleansing of all life by Kroagnon and his robotic Cleaners.
Wales, 1959. A top-secret US satellite has mysteriously gone missing. This could have something to do with the arrival of a party of alien tourists en route to Disneyland, amongst their number Mel and the Doctor, and the Queen of the Chimerons - who's fleeing the Bannermen and their genocidal leader Gavrok...
Mel's just discovered something very interesting about the life cycle of her new friend and the Doctor has been cornered by an alien bounty hunter wearing blue suede shoes.
As Billy and Ray do what they can to help save Delta and the baby, the Doctor and Goronwy the beekeeper face Gavrok and his Bannermen one last time...
The deep-space trading post of Iceworld, the far future. The Doctor, Mel, their old friend Glitz and time-lost waitress Ace go in search of a fabulous treasure, supposedly guarded by a fire-breathing dragon. But what is the link between the treasure and Iceworld's proprietor, the frosty Mr Kane?
While Mel and Ace run from Glitz's former crewmen (whom he sold to Kane), officers Belazs and Kracauer conspire to overthrow Kane. The Doctor, meanwhile, discovers there really is a dragon in the ice caverns, which turns out to be a bio-mechanoid with a very interesting function.
At last learning the location of the missing key to his spaceship, Kane has the dragon hunted down and Iceworld brutally purged of all visitors; but, the Doctor, visiting the Ice Garden, learns something significant that will put the chagrin on Kane's grand plans for home world vengeance.
London, 1963. Returning to the scenes of his first televised adventure, the Doctor and new companion Ace play a tricky game of bluff and deceit involving two rival Dalek factions, local soldiers, and the awesomely powerful Gallifreyan artefact, the Hand of Omega...
With two factions of Daleks involved in a race war on Earth, the Doctor takes care of old business by having the Hand of Omega ceremoniously but quietly buried in a churchyard. His actions do not go unobserved, and leaving behind a bored Ace without a purposeful outlet could spell trouble as well.
The Doctor plans to let one of the Dalek factions have the Hand of Omega (but not too easily, of course) while keeping Gilmore and his military men preoccupied in a safe territory, but that plan could be threatened by a mole in their midst and a miscalculation on the Doctor's part.
The Omega device is in jeopardy. A giant Dalek warship hangs above the Earth. London has become a battleground for ruthless alien intelligences.
The Earth colony Terra Alpha, the future. With the aid of her sweet-natured executioner, Helen A, ruler of the planet, has ensured the population is happy - on pain of death! The Doctor and Ace decide to fight for the right to be miserable.
The Doctor and Earl manage to escape from the Kandy Man and join up with the planet's natives, the Pipe People, enlisting their help to rescue Ace.
As the Doctor leads the Pipe People towards reclaiming their world, Helen A faces betrayal from those closest to her.
The Doctor and Ace battle the time traveller Lady Peinforte and the Cybermen for possession of the incredibly powerful Nemesis statue, which is on its way back to the planet Earth to rendezvous with a destiny set in stone by the Doctor himself.
As hostilities break out between factions vying for ownership of the comet, the Doctor goes after the worst of the lot - Cybermen, using Ace's upgraded boom box to flood Cyber Communications with jazz music while trying to locate the whereabouts of the fleet beyond this mere scouting party.
With the Cyber Fleet poised nearby, the Doctor may have no choice but to let them have Nemesis. Meanwhile, Lady Peinforte and Richard navigate modern society, De Flores encounters an open betrayal, and Ace combats Cybermen with a slingshot.
The Doctor and Ace visit the Psychic Circus on the planet Segonax, where they find the standard of judging at the talent contest distressingly astringent.
The Doctor and Ace reach the Psychic Circus, where the Doctor is imprisoned with the other contestants while Ace draws the attention of the Chief Clown.
Mags helps the Doctor escape and Deadbeat leads him to Ace, where Bellboy tells them what happened to the Psychic Circus.
Mags goes to find Ace and Kingpin, pursued by the Chief Clown, while the Doctor confronts the power behind the Psychic Circus.
As UNIT are transporting a nuclear warhead around Carbury, knights in armour arrive to continue waging a war that began thousands of years ago, but in a wholly different dimension.
The Doctor and Ace discover a stone spaceship underneath Warmsley's archaeological dig while Mordred summons Morgaine to Earth's dimension.
The Brigadier rescues the Doctor from the stone spaceship before they set out to locate Morgaine before she gains Excalibur.
Morgaine forces Ace and Shou Yuing to hand over Excalibur by threatening to release the Destroyer, so the Doctor and the Brigadier enter a dimensional portal to stop her.
The Doctor and Ace explore Victorian house Gabriel Chase and realise it hides just as many dark secrets in its drawing room as it does in its dark cellar.
The Doctor manages to rescue Ace from the husks and then tries to uncover the truth about the goings on in Josiah's house.
Only Redvers, still searching for the elusive Saxe-Coburg, seems able to withstand Light and communicate with Control. Ace realises her past actions need to be dealt with.
England, the 1940s. The TARDIS brings the Doctor and Ace to a secret naval base during WWII. There, the time-travellers battle vampiric Haemovores and an ancient Viking curse!
The Doctor and Ace manage to convince Sorin to release them while Millington and Judson attempt to translate the Viking runes.
The Doctor and his friends come under attack from the Haemavores, allowing Millington to retrieve the flask containing Fenric's essence.
Fenric is loose and planning to use the Ancient Haemovore to poison the Earth with chemicals, unless the Doctor can defeat him in their centuries old game.
Perivale, England, the late 1980s. People are vanishing into thin air under the baleful stare of a very strange cat. The Doctor and Ace learn that, in the battle for survival, success can carry a terrible price...
The Doctor and Paterson manage to escape from the Master and join up with Ace and her friends, where the Doctor tries to find a way to get them all off the planet before it explodes.
Ace manages to transport the Doctor and the others back to Perivale but the Master is also there, preparing for a final showdown with the Doctor.
San Francisco, 1999. Returning home to Gallifrey with the remains of the Master, the TARDIS is forced off course, landing the Doctor in the middle of a street gang's gun fight in San Francisco. Critically wounded in the shoot out, the Doctor regenerates to save his own life. Meanwhile, the Master has taken possession of another new body. As the clock counts down to the start of the new millennium, the Doctor has to stop the Master destroying all life on Earth. The stage is set for what could be the final battle between these arch-enemies…
