Profiling the Italian killer, jailed for murdering and mutilating his Bournemouth neighbour, Heather Barnett, in 2002.

New. Roy Whiting: A profile of child killer Roy Whiting, the convicted sex offender who abducted and murdered eight-year-old Sarah Payne.

An examination of Mick Philpott, the notorious Derby father of 17 who murdered six children, five of them his own, when he set his own home on fire.

The story of Raoul Moat, who shot his ex-girlfriend, her new lover and a policeman, leading to the largest manhunt in modern British history.

A profile of former aspiring model Tracie Andrews, who stabbed her fiance 42 times in 1996 and then blamed the attack on a fictional road rage assailant.

In 2012, April Jones disappeared from outside her home in Wales, never to be seen again. Her abductor, and murderer, was found to be Mark Bridger.

The story of Steven Grieveson, the so-called `Sunderland Strangler', who murdered four teenage boys before his capture.

Dubbed "the Grindr Killer", serial rapist Stephen Port murdered at least four men by using gay social networks to find his victims.

A profile of the two murderers who terrorized Britain in the 1980s with a string of attacks near railway stations.

The case of the cannibal killer Stefano Brizzi, who murdered and consumed part of a police officer he met through a dating app.