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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.
Britain's Most Evil Killers
S5, EP9 "Ali Qazimaj"A double murderer is found guilty of the brutal assassination of an elderly couple.
World's Most Evil Killers
S9, EP17 "Emanuel Webb"A decade-old link revealed a serial killer who kept the same M.O. after moving far away.
World's Most Evil Killers
S9, EP2 "Gavin McGuire"Teen Mhairi Julyan was murdered, and forensics led police to violent repeat offender Gavin McGuire.
World's Most Evil Killers
S7, EP2 "John Cannan"Experts look back on the crimes of John Cannan as he moved in and out of prison.
World's Most Evil Killers
S8, EP9 "Billy Mansfield Jr."Billy Mansfield Jr. moved between Florida and Michigan, targeting vulnerable women and girls.
World's Most Evil Killers
S5, EP16 "Keith Jesperson"Keith Jesperson, known as the Happy Face Killer, killed eight women across several states in the 1990s.
Britain's Most Evil Killers
S5, EP10 "Billy Dunlop"A profile of the killer who, after killing 22-year-old Julie Hogg, became the first person to be convicted under revised UK double-jeopardy laws.
World's Most Evil Killers
S5, EP10 "Cesar Barone"The American serial killer Cesar Barone took the life of four women in and around Hillsboro, Oregon in the 1990s.
World's Most Evil Prisoners
S2, EP8 "Simmons"Imprisoned for murdering a woman and her teenaged son, Denver Simmons only caused more violence behind bars.
World's Most Evil Prisoners
S2, EP1 "Bjork"Craig Bjork, who killed two women and both of his children, remains a dangerous threat -even behind bars.
World's Most Evil Prisoners
S1, EP6 "Johnson"Edward Johnson was sent to prison for the brutal murder of a female friend, but the violence didn't end there.
World's Most Evil Killers
S7, EP7 "David Bieber"A fugitive from the United States murders one British police officer and tries to kill two more, sparking a nationwide search.
World's Most Evil Killers
S8, EP16 "Joe O'Reilly"Less than 20 minutes after dropping her children off at school, Rachel O'Reilly is murdered.
World's Most Evil Killers
S8, EP11 "Harry Jarvis"When Carol Jarvis disappears, her husband tells friends and family that she's simply gone on a little holiday.
World's Most Evil Killers
S7, EP1 "Jorge Avila-Torrez"A look at the story of Jorge Avila-Torres, a prolific predator who carried out the horrific murders of young girls and other innocents.
World's Most Evil Killers
S9, EP9 "Derek Brown"Two missing mothers were linked when evidence tied Derek Brown to both their violent deaths.