World's Most Evil Killers

Stephen Port callously killed four young men between 2014 and 2015. He is unquestionably one of the World's Most Evil Killers.

In October 2012, Mark Bridger abducted and murdered five-year-old April Jones in Machynlleth, Wales. Evidence found on his laptop led to his conviction.

In 2012, fame hungry Mick Philpott killed six of his own children by setting fire to the family home as they slept upstairs.

In 2010, 37 year old bodybuilder Raoul Moat shot his ex-girlfriend and her partner, and went on the run and declared war on Northumbria police, vowing not to stop killing officers until he was dead.

For one week in 2016, Stefano Brizzi stored the body of policeman Gordon Semple at his flat in central London. Taking inspiration from TV show, Breaking Bad, he tried to dissolve the body in his bath tub.

On July 1st, 2000 eight-year-old Sarah Payne was snatched from the street in Littlehampton, West Sussex. She had been abducted and murdered by a 41 year old convicted paedophile called Roy Whiting.

On December 1st, 1996, Tracie Andrews had stabbed her own fiancé Lee Harvey to death and was trying to get away with murder.

A look at Jack Unterweger, an Austrian serial killer who committed murder in several countries.

Rodney Alcala appeared on "The Dating Game" and it led to his arrest. In 2011 he was found guilty of murdering six women and a 12 year old girl.

In August 1985 the 14-month killing spree of Richard Ramirez, AKA the Night Stalker, was ended after he claimed at least 13 lives.

Serial killing partners Leonard Lake and Charles Ng murdered11 people in California in the 1980s. They had a secret bunker where they raped and killed their prey.

The Sunderland Strangler, Steven Grieveson killed 4 teenage boys in the early 90s; he is one of Britain's Most Evil Killers.

Railway Killers, John Duffy and David Mulcahy killed 3 women and raped many more across a 4 year period in the early 1980s.

In 1999 handyman at a lodge in California Cary Staynor raped and murdered four young women. Obsessed with Big Foot, he became the monster in the woods.

From October 1989 to April 1991, Wolfgang Schmidt murders five women and an infant.

In December 2015 Horst Kroner boarded a plane. He had brutally murdered his wife while she slept and was now headed to Thailand for easy sex.

Edmund Kemper killed ten people: his grandparents, six co-eds, his Mother and her friend, until he was caught in California in 1973 and confessed it all.

In 1988 Puente had drugged and killed her victims, so she could continue to fraudulently claim their social security benefits.

Danilo Restivo murdered two women 9 years apart. 16 year-old Elisa Clapps in Italy and Heather Barnett in Bournemouth, who he mutilated. In her hands, cut hair.

In around Gdansk Poland from 1975 to 1983 Pawell Tuchlin attacked 20 women with a hammer. He brutally killed nine and sexually assaulted them all.