The Killer Within

14-year-old teenagers, Kim Edwards and Lucas Markham plan and execute a violent double murder.

Rodrigo Hernandez had killed twice and seemingly got away with it until the cold case team reopen the case over a decade later.

Ahmed Al Khatib concocted an elaborate plot to murder his wife Rania that included dressing up in her clothes--yet he has never revealed the location of her body.

A distressed call from a kidnap victim uncovers the actions of a serial killer whose despicable acts had gone undetected for a decade.

Charles Cullen was a nurse who turned his caring role into that of a serial killer.

Antoinette Frank was a cop turned killer who along with her boyfriend killed three people in one night in a robbery gone wrong.

After almost getting away with murder, we explore the case of killer Wilbern Cooper, a murderer who lived with his secret for 28 years until a vital clue led to his arrest.

When two innocent teenage girls leave a party in London, little do they know they are about to become the victims of a feud between two rival Birmingham gangs.

When the charred remains of a Nanny were found in South London, a motive of jealousy with a man she had never met was uncovered, resulting in her torture, intimidation and murder.

On January 7 2018, Barbara Coombes walked into Cheadle Heath police station and made a confession that shocked detectives: "I murdered my father 12 years ago."