The Welsh crime drama "The Light in the Hall: Still Waters" returns to Channel 4 at 9 p.m., bringing viewers back to the closely-knit community of Llanemlyn. The new series follows Caryl Huws, played by Sian Reese-Williams, who is now retraining as a journalist. Eager to secure employment, Caryl stumbles upon a potentially explosive story involving plans to extend a local reservoir, a project that has already sparked considerable controversy in the town.

The disputed reservoir extension is linked to a dark chapter in Llanemlyn’s recent history. In 1995, a protest against the reservoir culminated in an explosion that resulted in a fatality. Rhys Owen, portrayed by Mark Lewis-Jones, was convicted for the bombing and has since spent decades in prison. His return to Llanemlyn reignites questions about the case, as Rhys continues to proclaim his innocence.

As Caryl investigates, the series delves into whether Rhys was wrongfully convicted and explores the lingering tensions surrounding the reservoir and its impact on the community. The storyline weaves together themes of justice, environmental conflict, and small-town dynamics, positioning Caryl’s pursuit of the truth at the heart of the drama.

The new season promises a blend of suspense and character-driven storytelling, offering viewers an engaging examination of a community grappling with its past and the consequences of contested development projects. The series will continue with further episodes scheduled to air tomorrow.