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

Malcolm Green is jailed for life for the brutal murder of a Cardiff prostitute; he kills again when he is released after 18 years.

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

Steve Wright brutally killed five women in 2006, and is known as the Suffolk Strangler.

Examining the prolific murderer, Peter Sutcliffe, who over five years killed 13 people.