Series 3

Officers from the Metropolitan Police uncover a shallow grave in the back garden of a missing woman, leading detectives on an international manhunt.

Seventeen-year-old Jodie Chesney was stabbed in the back while hanging out with friends in the local park. An obscure clip of CCTV helped to catch her killers.

A small north Wales community is in fear after the ritualistic murder of an elderly woman. Police are convinced the killer is a local. Forensic evidence mounts, and the net closes in.

A loving mother is brutally attacked in the street during the evening rush hour. The police's prime suspect has a watertight alibi, so it's up to the forensics to uncover the truth.

After church organist Alan Greaves dies following a suspected hit and run, forensic experts find a clue on his body that unlocks the truth of the case.

After a gruesome discovery in a London canal, the investigation leads police to believe they're dealing with a serial killer. He's been careful to cover up his crimes, but forensic experts uncover hidden clues to expose the truth.

A family confront suspected moped thieves with fatal consequences. A close-knit London community demand justice, helping forensic specialists uncover evidence to unmask the knifeman.

After a talented young skateboarder is shot dead in front of his family in Liverpool, forensic experts recover a deleted social media message exposing two killers bent on petty revenge.

Police receive a call that 21-year-old student Libby Squire is missing. Humberside Police launch one of their biggest-ever missing persons searches. Then a body is found in an estuary.

The police force in Cornwall uncover a house of horrors: three bodies wrapped in bedsheets, hidden under a woodshed. The police uncover a web of lies, and zero in on their prime suspect.

After the shocking discovery of a man wrapped in a shower curtain and buried in a deep makeshift grave in the back garden of a Surrey home, forensic experts expose a dark secret.

A woman is found dead in a playground. When DNA links the murder to a series of sexual assaults in the area, forensic analysis of a water bottle identifies a dangerous predator.