In 2012, April Jones disappeared from outside her home in Wales. Her abductor, and murderer, was found to be Mark Bridger.
Serial rapist Stephen Port, who murdered at least four men using gay social networks to find his victims - for which he earned himself the nickname "The Grindr Killer"
What drove Raoul Moat to shoot his ex-girlfriend, her new lover and a policeman, leading to the largest manhunt in modern British history?
A profile of child killer Roy Whiting, the convicted sex offender who abducted and murdered eight-year-old Sarah Payne.
A profile of the two murderers who terrorised Britain in the 1980s with a string of attacks near railway stations.
A profile of the former aspiring model who stabbed her fiance 42 times, before blaming the attack on a fictional road rage assailant.
Known as the 'Sunderland Strangler', Steven Grieveson murdered four teenage boys before his capture. But what was his motive?
The case of the cannibal cop killer, Stefano Brizzi, who murdered and consumed part of a police officer he met through a dating app.
Profiling the Italian killer, jailed for murdering and mutilating his Bournemouth neighbour, Heather Barnett, in 2002.
