World's Most Evil Killers

Steve Wright killed five women over a six-week period in the winter of 2006 without motive or explanation.

Peter Sutcliffe, also known as The Yorkshire Ripper, was convicted of killing 13 women.

Ian Huntley abducted two 10-year-old schoolgirls, murdered them and tried to burn the bodies.

Fred and Rose West raped, tortured and killed young women in their house of horrors.

Levi Bellfield killed two young women by bludgeoning them to death with a hammer.

Joanne Dennehy violently stabbed three men to death in March 2013.

Stephen Griffiths, the self-proclaimed Crossbow Cannibal, had always fantasized about murder.

Dennis Nilsen killed at least 12 men in the late 70s and early 80s in Muswell Hill, London.

Stuart Hazell had sexually assaulted and murdered Tia, his partner's 12-year-old daughter.

It is widely believed that Peter Tobin is the 1960s Scottish serial killer known as Bible John.

In 1987, Michael Ryan went on a killing spree in the quiet market town of Hungerford in Berkshire.

Beverley Allitt killed four children and attempted to murder nine more.

John Wayne Gacy murdered 33 boys and young men during a six-year period in the 1970s; he was well-liked in the community he lived in and would often dress up for kids' parties, earning himself the nickname Killer Clown.

For 13 years, serial killer Jeffrey Dahmer raped, murdered and ate his young male victims; after his arrest, his apartment was searched and human skulls were found in his closet; he was killed by another inmate after serving two years in prison.

An in-depth look at murderer Ed Gein, who confessed to killing two women in the 1950s; Gein was found guilty but legally insane and was remanded to psychiatric institutions.

Joachim Kroll murdered at least thirteen people during a span of over twenty years.

Volker Eckert was a German trucker whose murderous career lasted over 30 years; he strangled and killed as many as 19 women across Europe.

A look at the criminal profile of Marc Dutroux, a Belgian serial killer who was convicted for kidnapping, torturing, and sexually abusing six victims until getting arrested in 1996.

Fritz Honka killed four prostitutes in Hamburg during the early 70s.

Thierry Paulin murdered 21 elderly women during the 1980s; he lived a lavish lifestyle, funded by the money stolen from his victims.