Joining the police on their mission to solve baffling crimes.

In 1973, a young man calls the Houston police to confess to a murder, but the investigation reveals a further 27 bodies.

When the bodies of seven backpackers are found 93 miles from Sydney, Australia, police mount an intensive search for the killer.

In 1970, Canada was shocked by the murder of 2 housewives. When the case was solved 30 years later, investigators found that the killer, Ronald West, was a cop at the time of the murders.

A reclusive loner named David Snow was responsible for some of the most heinous crimes in Canadian history, including the 9-day torture of a woman.