Robert Lee Yates Junior was a well-respected family man and war hero, but by night he was a cold-blooded serial killer. He was convicted of killing fourteen young women and one man.
In 2010, 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.
Shore was a dangerous sexual predator who will be remembered as one of the world's most evil killers.
Deadly consequences come from a friendship between two murderers who met in prison.
Less than 20 minutes after dropping her children off at school, Rachel O'Reilly was murdered.
In 2010, Derek Bird took his gun and, in less than twenty-four hours, killed twelve people and injured eleven more. He stopped when he had run out of ammunition, finally turning the gun on himself.
Jordan Monaghan killed his 24-day-old daughter Ruby on New Year's Day in January 2013.
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 twelve-year-old girl.
A dangerous sexual predator murdered one young woman just days after his release from prison.
The Bayou Strangler deceived, bound, assaulted and murdered men as he drifted across South Louisiana.
Thierry Paulin murdered 21 elderly women during the 1980s. He lived a lavish lifestyle, funded by the money stolen from his victims.
America's most notorious serial killer Ted Bundy confessed to the murder of thirty young women across the US between 1974 and 1978. He was executed in 1989.
Bobby Joe Long is an American serial killer and rapist who terrorised the Tampa Bay Area in Florida during 1984. During his eight-month sadistic killing spree, he murdered ten women.
The story of the Baton Rouge Serial Killer, known for murdering seven women and sentenced to death.
John Allen and his teenage accomplice carried out the brutal series of shootings that killed ten.
Diane Downs shot her three children, killing her seven-year-old daughter Cheryl and wounding her other two children.
A chilling profile of the father who took his two young children for fish and chips after murdering his wife, and then strangling them when they returned home.
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.
Stephen Farrow committed two murders in early 2012 motivated by an obsessive hatred of Christianity, which he attributed to sexual abuse from a priest.
Sante and her 23-year-old son Kenny Kimes were a murderous duo who killed three people in the late 90s, including an 82-year-old woman.