World's Most Evil Killers

Deadly consequences come from a friendship between two murderers who met in prison.

A dangerous sexual predator murdered one young woman just days after his release from prison.

The horrifying story of a computer engineer who lured a 14-year-old school boy to his flat and killed him.

A convicted killer serving life for manslaughter is found to be guilty of a second murder 32 years later.

A young criminal plots the deaths of his two elderly landlords in a bid to inherit from their estates.

16-year-old Becky Watts goes missing and is found dead a few days later, murdered by her own step-brother.

A fugitive from the United States tackles the British police and goes on the run.

A master manipulator accused of his wife's murder is eventually caught by a polygraph test.

A jailing for the shocking murder of author Helen Bailey leads to a second conviction of another.

A cult killer portrayed himself as a pillar of the community, but his story was deeply sinister.

Shore was a dangerous sexual predator who will be remembered as one of the world's most evil killers.

Jorge Torrez was a prolific predator capable of carrying out heinous and horrific acts.

Paul Michael Stephani became etched into the minds of all who knew him as the notorious, weepy-voiced killer.

Joshua Wade had all the hallmarks of a psychopathic killer with motives we will never understand.

Over six years, a copycat Zodiac killer stalked the streets of New York City in search of easy targets.

Goudeau terrorized victims in the Phoenix metro area between August 2005 and June 2006.

Robert Hansen was a monster who preyed on the most vulnerable women in society.

Paul Runge raped and killed seven people in Chicago. Police lacked evidence to arrest him despite suspicions.

The Bayou Strangler deceived, bound, assaulted and murdered men as he drifted across South Louisiana.