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Sundance Now has set the North America premiere date for Murder in the Valleys, a docuseries that explores one of the most controversial murder investigations in Wales.

Murder in the Valleys
Murder in the Valleys — Photo © 2022 Sundance Now, Five Mile Films & All3Media International

Murder in the Valleys tells the story behind the biggest murder investigation in Welsh history and its lasting repercussions.

Filmed over the course of twelve months, the four-part docuseries revolves around the June 1999 murders of four people — three generations of women in one family who were brutally killed in their home in the small village of Clydach in South Wales — a heinous crime since referred to as the Clydach Murders.

A local builder was convicted of the murders and given a life sentence. Despite this, the case has divided the community for more than twenty years.

It is when a new witness comes forward that the South Wales Police decide to review the evidence anew and reexamine the details of the Clydach Murders case — a case that didn’t end with the guilty verdict.

Murder in the Valleys premieres in the US and Canada in its binge-drop entirety on Tuesday, September 27, exclusively on Sundance Now and the AMC+ streaming bundle.

A production of Five Mile Films, the docuseries is filmed and directed by Tom Barrow (Louis Theroux: Life on the Edge, 24 Hours in Police Custody). Nick Mirsky is the Executive Producer and Owen Phillips the Series Producer. The Production Manager is Ross Stanley.


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Murder in the Valleys: Sundance Now Sets Premiere Date for True-Crime Docuseries