Martin Kemp examines the case of Frederick and Rosemary West, a married couple who killed at least ten young British girls, many at their home in Gloucestershire.
Martin Kemp examines the case of Dennis Rader, known as the BTK strangler. He bound, tortured and killed his ten victims in Kansas, terrorising his town for over 30 years.
Martin Kemp examines the case of Peter Sutcliffe, known as the Yorkshire Ripper, convicted of murdering 13 women between 1975 and 1981 in the North of England.
Martin Kemp examines the case of Gary Ridgway, known as the Green River serial killer, who killed at least 49 women in Washington state in the 1980s.
Martin Kemp examines the case of Dennis Nilsen, also known as the Muswell Hill Murderer, who killed at least 12 young men between 1978 and 1983 in London.
Martin Kemp examines the case of Aileen Wuornos, who killed at least seven men in Florida by shooting short range between 1989 and 1990.
The hunt for the Suffolk Strangler, who murdered five prostitutes in the Ipswich area during 2006, lead to the largest manhunt since the Yorkshire Ripper.
Examines the motivations behind Ivan Milat's murderous rampage across Australia which was exposed after the bodies of seven backpackers were discovered.
Japanese serial rapist-murderer Joji Obara was discovered when Tokyo police began investigating the disappearance of British bar hostess Lucie Blackman.