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Lonnie David Franklin Jr. is better known by the nickname Grim Sleeper; he lures vulnerable women into his car before murdering and sexually assaulting them for more than two decades.

Lonnie David Franklin Jr. is better known by the nickname Grim Sleeper; he lures vulnerable women into his car before murdering and sexually assaulting them for more than two decades.

More episodes

World's Most Evil Killers

S7, EP9 "Ronald Dominique"

For nearly a decade, the Bayou Strangler deceived, bound, assaulted and murdered men, as he drifted across South Louisiana.

World's Most Evil Killers

"Patrick Kearney"

A profile into the murderer who terrorized the gay community as the "Trash Bag Killer" and confessed to killing 32 victims.

World's Most Evil Killers

S6, EP5 "Don Miller"

A terrifying killer snatches away the lives of four victims before being caught while trying to claim his fifth.

World's Most Evil Killers

S5, EP9 "Richard Roszowski"

A profile of Richard Roszkowski, the Connecticut triple-murderer who killed his ex-girlfriend, her nine-year-old daughter and another man in a brutal attack in 2006.

World's Most Evil Killers

S8, EP3 "John Eric Armstrong"

In 1999 and 2000, John Eric Armstrong cruised the streets of Detroit, Mich., looking for sex workers; seen as an ordinary husband, father and co-worker, no one in Armstrong's life suspected that he was a serial killer.

World's Most Evil Killers delves straight into the stories of the world's most prolific killers. Each episode focuses on one notorious killer and features first-hand accounts of their behavior; such killers range from Fred and Rose West, Ed Gein, the Clown Killer, to the Milwaukee Cannibal. Accounts are also given by detectives who ran the cases, journalists who reported on them, relatives, experts on analysis, and sometimes even survivors.
Starring: Andy Gatenby, Bryanna Fox, Chidinma Ifunanyachi, Christopher Kouros, Elizabeth Yardley, Gareth Lawrence, Geoffrey Osborne, Geoffrey Wansell, Jayme Swiftt, Nicholas Benjamin, Roberto Vivancos, Ross Huguet, Susan Mustafa, Toby Shook, Tom Bonington
Original Air Date: May 25, 2017
Genres: DocuseriesTV Series
Rating: TV14
Playback: HD
5 seasons available on demand
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