
Examining some of the most dangerous and prolific murderers in the UK and worldwide.

After Tracie Andrews' fiancé, Lee Harvey, is murdered in an apparent road-rage incident, she gives a heart-wrenching press conference, appealing to the public to help find her partner's killer.

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

An investigation into 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.

Analysis of what drove Raoul Moat to commit his crimes.