World's Most Evil Killers

Criminologists profile Edmund Kemper aka The Co Ed Butcher, the American serial killer whose spate of killings lasted from 1964 to 1973.

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

The story of the Death House Landlady, Dorothea Puente, 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 not only committed a series of horrific murders but also raped and tortured their victims from their cabin in California during the mid 1980s.

Also known as the Yosemite Park Killer, Cary Stayner murdered four women in 1999 before his capture. During his trial it was suggested his actions were a result of a tragic childhood. Many years before, his brother was abducted but Cary escaped.

Examining the so called Dating Game Killer, Rodney Alcala, who appeared on a dating game show in the midst of a horrific killing spree that may have claimed as many as 130 victims.

The disturbing and horrifying case of Horst Kroener, a 53 year old German man, who was jailed in 2016 for brutally murdering his Filipina wife when she asleep in their bed.

The horrifying case of Wolfgang Schmidt also known as the Pink Giant, a transgender German serial killer who brutally murdered a total of five women and an infant from 1989 to 1991.

The story of the Austrian serial killer Jack Unterwger, who was heralded as an example of successful rehabilitation after his first conviction for murder, only for him to kill again.

An examination of the Polish serial killer, who came to be known as The Scorpion. He murdered nine women and attacked eleven others in a most devastating spree of violence.