World's Most Evil Killers

Lee Ford kills his wife and four stepchildren in a cold-blooded murder spree over 24 hours in September 2000.

A 23-year-old killer murders 17-year-old former head girl Georgia Williams in 2013.

A killer attacks his ex-girlfriend in a jealous frenzy and commits a brutal murder after a campaign of harassment.

Stuart Campbell is convicted for the murder of his 15-year-old niece in 2002, even though her body has never been found.

Sarah Williams and Katrina Walsh, the two friends carry out the jealousy-fuelled murder of Sadie Hartley.

Pawel Relowicz rapes and kills 21-year-old Hull student Libby Squire in a case that made headlines around the UK.

The story of a killer who took four lives during a chilling two-day killing spree in 2004 after being inspired by horror films.

Geoffrey Evans and his accomplice John Shaw hit headlines in 1976 after the murders of two women in Ireland.

The story of Mark Martin, who murdered three homeless women in his quest to become Nottingham's first serial killer.

Malcolm Green is jailed for life for the brutal murder of a Cardiff prostitute; he kills again when he is released after 18 years.

The story of the Beltway sniper attacks; John Allen and his teenage accomplice carry out a brutal series of shootings that kill ten people.

One of the most prolific serial killers in Canadian history is dubbed "The Pig Farmer Killer" by the media.

A serial killer brutally snatches away the lives of eight innocent women during a decade-long killing spree in Louisiana.

A killer murders her own son and becomes the first woman to be executed in Florida since 1848.

A terrifying killer snatches away the lives of four victims before being caught while trying to claim his fifth.

The I-95 killer, who brutally killed six men in 1994, is executed three years later.

The Baton Rouge Serial Killer, known for murdering seven women is sentenced to death for his chilling crimes.

The first woman executed by lethal injection after taking six lives.

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

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