World's Most Evil Killers

Serial killer Edmund Kemper killed six women in California and several members of his family.

Exhibiting cruelty, callousness, and viciousness beyond any human understanding, Richard Ramirez terrorized Los Angeles with his spate of home invasions.

The story of the "Death House Landlady", who took in elderly and disabled tenants, only to murder them for their social security paychecks

The chilling case of a Hong Kong kleptomaniac and a Vietnam veteran who committed a series of horrific murders from their cabin in California.

Also known as the Yosemite Park Killer, Cary Stayner murdered four women in 1999 before his capture. Were his actions the result of a tragic childhood?

Examining the murderer who appeared on a dating game show in the midst of a killing spree that may have claimed as many as 130 victims.

The disturbing case of 53-year-old German Horst Kroener, who was jailed in 2016 for murdering his Filipina wife in her sleep.

The case of 'The Pink Giant', Wolfgang Schmidt, a transgender German serial killer who brutally murdered five women and an infant.

The story of the Austrian serial killer Jack Unterweger, who was heralded as an example of successful rehabilitation, only for him to kill again.

DescriptionBetween 1982 and 1986 a series of rapes and murders in and around London had women living in fear; two men, John Duffy and David Mulcahy, were targeting their victims at railway stations; the pair had grown up together as best friends.

An examination of the Polish serial killer, who came to be known as "The Scorpion" after murdering nine women and attacking eleven others.

Roy Whiting kidnaps and murders 8-year-old Sarah Payne in 2000, after having already been convicted of kidnapping a 9-year-old girl and indecently assaulting her in 1995.

Steve Wright killed five women over a six week period in the winter of 2006 without motive or explanation.

Stephen Griffiths, the self-proclaimed Crossbow Cannibal, acted on his murderous instincts in 2009 and killed three women.