
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.

Joanne Dennehy violently stabs three men to death in March 2013; she kills for her own entertainment and is diagnosed as a psychotic sadomasochist.

A chilling look at Stephen Griffiths, who in 2009 viciously murdered three women.

A look at the London serial killer Dennis Nilsen, who murdered at least 12 men before being caught.

When Tia Sharp disappears, Stuart Hazell helps police search for her, but in reality he had murdered the 12-year-old.

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.