1. DNA

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. 9 October 2019. 59 min

The story of the hunt to find the killer of two teenage girls in 1980s Leicestershire which led to an extraordinary forensic breakthrough - DNA fingerprinting.

2. Double Jeopardy

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. 16 October 2019. 59 min

Shocked by the failure to convict her daughter’s killer, a mother fights for justice by taking on the legal establishment and overturning an 800-year-old law.

3. Interrogation

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. 23 October 2019. 59 min

The story of how a 1970s miscarriage of justice involving three teenage boys would lead to a radical overhaul of police powers and a brand new method of investigation.