Twisted

Jeffrey Dahmer murdered 17 men and boys – many of whom were of African or Asian descent – between 1978 and 1991.

Crimes committed by Hindley and her lover, Ian Brady, shocked the nation.

Profiling John Allen Muhammad and John Lee Malvo, the men behind the 2002 'Washington Sniper' shootings. John Allen Mohammed, 42, a veteran of the Gulf War in 1991, and his stepson John Lee Malvo, 17 were convicted in 2004 of being the “Washington Sniper”, who had been terrorizing America over a period of three weeks.

The world’s most prolific killer, Harold Shipman is estimated to have killed 275 people. When the police began investigating, they struggled to understand him. How could a doctor who was trusted and respected by more than 3000 patients also be a killer?

Between 1989 and 1992 seven hitching backpackers were murdered by ``The Back Pack Killer'' Ivan Milat.