World's Most Notorious Killers

Police in Gloucester, England, investigating the case of a missing girl chance upon a graveyard of bones beneath the house of Fred West. Their mission to identify the bodies and piece together what happened uncovers several twisted family secrets.

A series of deaths perplexed the police in Vienna, Austria. When similar murders occur in Los Angeles, detectives realise they are hunting the world's first transatlantic serial killer: a celebrity hiding in plain sight.

Six Belgian girls mysteriously go missing at the hands of The Monster, Belgium's infamous serial killer. Once the culprit is unmasked, police realise they may have stumbled upon a child sex slavery ring with powerful allies.

In January 1982, Lynette Dawson, a loving wife and mother, disappears and days later, her husband Christopher Dawson moves their teenage babysitter into their home. 40 years later, a podcast reveals the terrible truth.

Charles Sobhraj, a charming gem dealer, confesses to the horrific murders he committed in the 1970s, when travellers in south-east Asia were mysteriously killed.