Murder in the Valleys - 1 ª Season

The Murder. A new witness comes forward with information about one of the country's most controversial murders. David Morris, a builder with a long criminal record, has spent more than two decades in prison for the Clydach Murders but has always maintained his innocence. Now, the police decide it's time to open their files and review the case. This is the story of what started as a routine call to a house-fire but became the biggest murder investigation in Welsh history.

The Investigation. Twelve months into the investigation into who committed the Clydach Murders and the police face an extraordinary set of circumstances. The prime-suspect, one of the victim's lovers, is a former police officer and Welsh rugby international, whose husband is a serving police sergeant and whose identical twin brother happens to have been the first senior police officer on the murder scene. How will detectives investigate three of their own?

The Trial. The discovery of the owner of a gold chain found at the murder scene leads detectives to a new suspect: David George Morris. He is well known to the police with a long criminal record. This is the breakthrough the police needed, and the scene is set for one of the most high-profile murder trials in Welsh history, but some in the community question if it is all a bit too convenient.

The Review. In the eyes of the legal system, David Morris is as guilty as guilty gets. He's been convicted of the murders at two trials and his case has been rejected by the body whose job it is to investigate miscarriages of justice. But South Wales Police have a historic record of locking up the wrong people in murder cases and many locally still question if the right man is behind bars for the Clydach Murders. Now, with the emergence of a new witness, the police decide it's time to review one of their most controversial cases.