
This episode discusses the murders of Deirdre Sainsbury and Claire Woolterton by Colin Campbell, a seemingly ordinary man who was a predator. Key topics include Campbell's background, his method of luring victims, and the investigation that ultimately led to his capture.
On December 22, 1984, Deirdre Sainsbury, a 29-year-old peace activist, was hitchhiking when she was picked up by Colin Campbell. After making sexual advances, Campbell killed her in a fit of rage. He later attempted to cover up the crime by mutilating her body.
Earlier, in August 1981, Campbell had murdered 17-year-old Claire Woolterton after offering her a ride. Despite extensive investigations, he evaded capture for years, as forensic technology at the time was limited.
Both murders showcased Campbell's violent tendencies and misogyny. He was eventually arrested after a witness provided his car's registration number, leading police to discover evidence linking him to Deirdre's murder.
Colin Campbell was convicted of both murders, with the episode highlighting the long wait for justice for Claire's family and the eventual cold case review that led to Campbell's second trial in 2013.
Colin Campbell murdered Deirdre Sainsbury and Claire Woolterton, evading capture for years before being convicted for both crimes.

This episode stands out for the following:
She had a very deep wound to her throat.The Hitch Hiker Killer | World's Most Evil Killers
He wants the body to be discovered.The Hitch Hiker Killer | World's Most Evil Killers
This is about possession. It's about control.The Hitch Hiker Killer | World's Most Evil Killers
Imagine the impact that must have had on her family.The Hitch Hiker Killer | World's Most Evil Killers
It's a pathetic excuse, utterly pathetic.The Hitch Hiker Killer | World's Most Evil Killers
It's a remarkable piece of police work.The Hitch Hiker Killer | World's Most Evil Killers