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When 13-year-old Lucy is reported missing by her mother, police and forensic investigators begin the painstaking search for the truth.

The case of Tia Sharp, a 12-year-old girl reported missing in London, leading to a major search which took the police close to home.

Years after the crime, see how forensics helped solve the murder of Becky Godden-Edwards, finding a killer who had sadly murdered again.

A woman dies in an apparently accidental house fire, but one police officer spots signs that something more sinister is at play.

The investigation of a murder of her mother in her home in 1994, as police used forensic clues to find an appalling killer.

See how investigators uncovered the perpetrator behind the 1994 murder of a grandmother at a bathroom of a bus station in Bury.

After a grandmother is strangled to death at an allotment shed, police use the scene's forensics clues to solve a chilling case.

The case of Suzanne Greenhill, a deaf woman murdered in her own home, whose murder took forensic investigators on a trail through Europe.

When body parts wash up on a beach in Arbroath, forensic investigators must unravel the disturbing truth behind a woman's death.

E10

When a body is found in a flat, a trial of forensic evidence allows detectives to distinguish between friend and foe.

E11

The tragic case of 22-year-old Helen McCourt, who got off a bus one night in her hometown but never arrived at her nearby home.

E12

A women's killer remains at large for more than 30 years, until forensic investigators track him down with a tiny clue at the scene.