Elizabeth Yardley

25 years after he first reported on it, Sir Trevor re-visits the case of Beverley Allitt, one of Britain's most prolific serial killers.

In March 2011, four adults who lived in a cul-de-sac in the Welsh town of Kidwelly were convicted of multiple sex offences against children and young adults. The group led by Colin Batley was described by the media as a "Satanic sex cult", a "quasi-religious sex cult" and a "paedophile cult." Episode from crime-series "Nightmare in Suburbia".

World’s Most Evil Killers delves into the gripping real-life stories of the world’s most terrifying and prolific killers. From Fred and Rose West to Ed Gein – The Clown Killer – and even to The Milwaukee Cannibal. Each episode focuses on one notorious killer and features authentic first-hand accounts of their behavior, from detectives who ran the case, journalists who reported on the stories, relatives, and at times survivors, alongside series experts who provide analysis. These criminologists, crime journalists and psychologists examine how the infamous killers made headlines both nationally and internationally and why they still continue to evoke fear and fascination in the public eye.

The smiling parents, the respectable groom, the helpful official... all with evil inside. Britain's Most Evil Killers explores the crimes of Britain's most brutal killers.