Two decades later, a new witness comes forward and the biggest murder investigation in Welsh history is re-opened. Unfortunately Murder in the Valleys isn't available to watch right now.

alongside Catherine Mackin and Don Klees for Acorn TV and Paul Testar, Channel 5's Drama Commissioning Editor. Murder Before Evensong will air later this year on Channel 5 and Acorn TV worldwide.

The ITV drama focuses on the murder of a family in witness protection with big concerns over possible leaks in the witness unit ...