Y Golau: Dŵr / The Light In The Hall: Still Waters

The series is the English-language version of Y Golau: Dŵr, which previously aired in Welsh on S4C, and returns to the fictional town of Llanemlyn as a controversial plan to expand the reservoir reignites long-buried tensions.

Told across two timelines, the story begins in 1995, when activist Llyr Owen dies in a bombing and his cousin Rhys is jailed for the crime. Thirty years later, Rhys returns home to a community once again divided by protest. As trainee journalist Caryl becomes drawn into the story, her investigation begins to unravel hidden truths, exposing secrets that have shaped the town for decades, in a gripping drama of protest, guilt and generational reckoning.

The second series features an ensemble cast led by Siân Reese-Williams (Hidden / Craith, 35 Diwrnod, Hinterland / Y Gwyll) as Caryl Huws, Mark Lewis Jones (Yr Ymadawiad, Y Sŵn, Dal y Mellt) as Rhys Owen, Nia Roberts (Tree on a Hill / Pren ar y Bryn, Yr Amgueddfa, Hidden / Craith) as Eve Davies and Robert Glenister (Sherwood, The Night Caller, Hustle) as Robert Davies.