He killed a 15-year-old girl and then went on to live 40 years of a normal life, knowing someone else was wrongly convicted of his crime
When an elderly woman dies following a blaze in a care home, it emerges that Karen pedley has a history of strange connections to arson attacks
Malcolm Webster, who murdered his first wife and tried to do the same to his second in a greed-fuelled frenzy. The film explores whether he was always destined to be a killer.
A man bails his love interest out of debt only to pay the ultimate price with his life. Were his killer's lifelong narcissistic tendencies a warning sign?
The story of how a 16-year affair turned sour when a man decided he wanted out, prompting his lover to poison him - earning herself the nickname the 'Curry Killer' in the process.
The story of Alyssa Bustamente from Missouri, the 15-year-old who invited her nine-year-old neighbour out to play - only to viciously murder the young girl in the woods.
A deadly marital pact between Kelly Cochran and her husband sealed her fate as a killer, but who is the woman behind the bloodshed?
The crimes of William Devon Howell, one of the most prolific killers in Connecticut's history, examining what factors in his life led to his bloodthirsty urges.
The case of American hospital worker Jesse Matthew, who was convicted for taking the lives of two women as a cold-blooded killer and sex offender. One of his victims was 18-year-old Briton Hannah Graham.
The crimes of Anthony Shore, who became known as the Tourniquet Killer because of the signature technique he used to dispatch four female victims between 1986 and 2000.
Ian Paton: A look at the life of the killer who strangled his on-off partner Kayleigh Hanks while their baby daughter slept in the same room
Hannegret Donnelly: The story of a woman who controlled her husband, Christopher, with horrific violence and abuse before finally killing him with a rolling pin
Don Miller: In the span of a year, Don Miller raped and killed four people including his former fiancee. What drove him to commit these vicious crimes?
Glyn Dix: His wife suffered a brutal murder at his hands. What drove Glyn Dix to commit this horrific murder?
Virginia Vertetis: A look into what drove former teacher Virgina to gun down her boyfriend, a retired New York City police officer, in cold blood
David Roustoby: He murdered his neighbour in cold blood and even went on to brag about committing the crime. Was David Roustoby born destined to kill?
Willy Inmon: At the age of 21 he had already taken three lives. What drove Willy Inmon to commit these senseless murders
Denise Williams masterminded a deadly plot that claimed the life of her first husband Mike Williams.
The story of carer Thomas Dunkley, who was assigned to look after former boxer Shaun Cummins after he became paralysed and later killed him.