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World's Most Evil Killers

S7, EP3 "Lewis Daynes"

Exploring a case highlighting the many dangers of online grooming; on 17 February 2014, fourteen-year-old Breck Bednar was lured to a London flat before being killed by a fellow teenager.

World's Most Evil Killers

S7, EP2 "John Cannan"

Experts looks back on the crimes of John Cannan as he moved in and out of prison.

World's Most Evil Killers

S7, EP1 "Stephen Unwin & William McFall"

After striking up a friendship in prison for previous murders, Stephen Unwin and William McFall's release had awful consequences.

World's Most Evil Killers

S6, EP20 "Genene Jones"

A serial killer works as a nurse in Texas, where she kills many children and infants by injecting them with drugs.

World's Most Evil Killers

S6, EP20 "Genene Jones"

A serial killer works as a nurse in Texas, where she kills many children and infants by injecting them with drugs.

World's Most Evil Killers

S6, EP19 "Chester Turner"

A cold-blooded serial killer takes the lives of eleven people during a terrifying decade-long murder campaign.

World's Most Evil Killers

S7, EP11 "Anthony Allen Shore"

A Texas serial killer, Anthony Allen Shore was matched to four murders after his arrest for a different crime.

World's Most Evil Killers

S7, EP10 "Zahid Zaman"

On the surface, Zahid Zaman portrayed himself as a pillar of the community, but the true story of this cult killer was deeply sinister.

World's Most Evil Killers

S2, EP18 "Jack Unterweger"

A look at serial killer Jack Unterwger.

World's Most Evil Killers

S3, EP9 "Robert Black"

Scottish serial killer Robert Black attacks four young girls between 1981 and 1986; he is sentenced to life imprisonment at HMP Maghaberry with a minimum sentence of 35 years and is linked to 13 other child murders.

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, EP7 "Aileen Wuornos"

From November 1989 to November 1990, Aileen Wuornos kills at least six men in Florida.

World's Most Evil Killers

S3, EP7 "Aileen Wuornos"

From November 1989 to November 1990, Aileen Wuornos kills at least six men in Florida.

World's Most Evil Killers

"Angus Sinclair"

Angus Sinclair, the only living person to stand trial for Edinburgh's World's End Murders, was acquitted in 2007 in controversial circumstances.

Britain's Most Evil Killers

S3, EP1 "The Gay Slayer"

Colin Ireland targets patrons of a gay pub in Earl's Court, London.

World's Most Evil Killers

S3, EP16 "BTK - Dennis Rader"

Dennis Rader, known to the World as the BTK Killer, killed ten people, including young children, between 1974 and 1991 in Wichita, Kansas.

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