1. The Murder

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. 6 February 2022. 47 min

What begins as a routine call to a house fire becomes the biggest murder investigation in Welsh history.

2. The Investigation

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. 13 February 2022. 49 min

The police must figure out how to investigate not one, but three of their own when it emerges the prime suspect is a police officer.

3. The Trial

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. 20 February 2022. 49 min

A new suspect emerges and with his chequered past, the police are convinced they've got their man. But the community isn't so sure.

4. The Review

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. 27 February 2022. 51 min

Builder David Morris is convicted of the murders. After he's spent 20 years behind bars, a new witness comes forward, sparking a case review.