
A whole channel dedicated to the lives and crimes of some of the World's Most Evil Killers like Jeffrey Dahmer, Richard Ramirez, Dorothea Puente and more.

Peter Tobin raped and murdered a student in 2006, and investigations linked him to two more murders.

In 1987, Michael Ryan killed 16 people in Hungerford, Berkshire, before turning the gun on himself.

Beverley Allitt killed four children and attempted to murder nine more while working as a nurse at Grantham and Kesteven Hospital in Lincolnshire, England, in 1991.

John Wayne Gacy murdered 33 boys and young men during a six-year period in the 1970s; he was well-liked in the community he lived in and would often dress up for kids' parties, earning himself the nickname Killer Clown.

For 13 years, serial killer Jeffrey Dahmer raped, murdered and ate his young male victims; after his arrest, his apartment was searched and human skulls were found in his closet; he was killed by another inmate after serving two years in prison.

An in-depth look at murderer Ed Gein, who confessed to killing two women in the 1950s; Gein was found guilty but legally insane and was remanded to psychiatric institutions.

One of the UK's most infamous serial killers, Joanna Dennehy brutally stabbed three men to death.

His time behind bars only made Italian-American mobster Freddy Geas even more brutal.