Torchwood star Eve Myles will lead the cast of a new thriller filmed back-to-back in both Welsh and English.

The eight-part series will premiere this autumn as Un Bore Mercher on S4C, then followed by an English language version called Keeping Faith on BBC One Wales in early 2018.

Set in Carmarthenshire, the drama tells the story of lawyer, wife and mother Faith (Eve Myles) as she fights to find the truth behind the sudden disappearance of her husband. She comes to discover that her beautiful, idyllic home town, set on the estuary, harbours many dark secrets that threaten the lives of Faith and her family. Faith’s ordeal transforms her from a stay-at-home, fun-loving and carefree mother to detective, action hero and lover. She takes risks and gambles and finds a new inner strength.

Written by Matthew Hall (Kavanagh QC), Keeping Faith / Un Bore Mercher is filming now on location in the Vale of Glamorgan, Carmarthenshire and around Laugharne, with studio scenes recorded in Bridgend.

The cast also includes Matthew Gravelle (Broadchurch), Mali Harries (Hinterland), Mark Lewis Jones (Stella) and Aneirin Hughes (Hinterland).

Nick Andrews, Head of Commissioning at BBC Wales, commented: “This is fantastic news. To have a genuine home-grown drama, produced by world-class talent at the top of their game, I can’t wait to see what the team will do.”

Gwawr Martha Lloyd, S4C Drama Content Commissioner, added: “We’re very excited about this new and original series that will be premiering on S4C this autumn. With a stellar cast and a completely compelling story, plot and setting, we’re hoping the audience will grow to love the world and the characters of Un Bore Mercher as much as we in S4C have as we worked to develop the series. The series intends to take the viewer on a thrilling, emotional and warm journey, which will pull at their heart-strings but will also make them smile along the way.”

Are you looking forward to Keeping Faith / Un Bore Mercher? Let us know below…