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A profile of Karol Kot, also known as the Vampire of Krakow, who killed an 11-year-old boy and an 86-year-old woman, before attempting to kill more in prison.

A profile of Karol Kot, also known as the Vampire of Krakow, who killed an 11-year-old boy and an 86-year-old woman, before attempting to kill more in prison.

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World's Most Evil Killers

S5, EP17 "Dayton Rogers"

Dayton Leroy Rogers, known as The Molalla Forest Killer, is a serial killer who mutilated and killed at least eight women.

World's Most Evil Killers

S2, EP3 "Dorothea Puente"

Dorothea Puente was a convicted serial killer who ran a boarding house in the 1980s; she cashed in the Social Security checks of the elderly and disabled boarders living in her house; many of them ended up dead and buried in the backyard.

World's Most Evil Killers

S2, EP6 "Rodney Alcala"

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.

World's Most Evil Killers

S2, EP2 "Richard Ramirez"

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.

World's Most Evil Killers

S3, EP10 "Karol Kot"

A profile of Karol Kot, also known as the Vampire of Krakow, who killed an 11-year-old boy and an 86-year-old woman, before attempting to kill more in prison.

World's Most Evil Killers

S3, EP8 "Robert Lee Yates Jr."

Robert Lee Yates kills 13 prostitutes in Spokane, Wash., between 1996 and 1998, and later confesses to two other murders committed in 1975 and 1988.

World's Most Evil Killers

S3, EP6 "Diane Downs"

Diane Downs was convicted of the May 1983 murder of her daughter and attempted murder of her other two children, yet she told police a stranger had attempted to carjack her and had shot the children.

World's Most Evil Killers

S3, EP4 "Gary Ridgway"

A look at Gary Ridgway, also known as the Green River Killer, and his reign of mass murder across the Pacific Northwest for almost 20 years.

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, Bobby Chacon, Chris Carter, Christopher Kouros, Elizabeth Yardley, Gareth Lawrence, Geoffrey Osborne, Geoffrey Wansell, Rex Julian Beaber, Roberto Vivancos, Ross Huguet, Stephan Harbort, Stuart Hamilton, Susan Mustafa, Tom Bonington
Original Air Date: May 25, 2017
Genres: DocuseriesTV Series
Rating: TV14
Playback: HD
4 seasons available on demand
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