
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.

Rodney Alcala, who once appeared as a contestant on "The Dating Game," is sentenced to death over five murders committed in the '70s and later confesses to 30 more, but is believed to have killed up to 130 people.

Born in El Paso, Texas, on February 29, 1960, Richard Ramirez was an American serial killer who over a two-year rampage raped and tortured more than 25 victims and murdered more than a dozen, most of them in their own homes.

Four vicious murders put Mark Hobson at the center of a nationwide manhunt. Criminologists and psychologists try to decode this enigma.

Bobby Joe Long is on Florida's death row for abducting, sexually assaulting and murdering at least 10 women in the Tampa Bay area during an eight-month period in 1984.

Serial killer Bob Berdella, aka the Kansas City Butcher, kidnaps, rapes, tortures, and murders at least six men between 1984 and 1987 in Kansas City, Mo., forcing his victims to endure periods of up to six weeks of captivity.

In Cumbria, 2010 taxi driver Derek Bird takes his gun and, in less than 24 hours, kills 12 people and injures 11 more; the callous killer only stops when he runs out of ammunition, finally turning the gun on himself.

In August 1990, Danny Rolling murdered five college students in Gainesville, Fla., home of the University of Florida, and created gruesome crime scenes that were designed to shock.

A look at the 21-year-old killer who brutally took the life of British student Matthew Pyke, after developing an obsessive infatuation with his girlfriend.