In this fourth installment, John (Andrew Lincoln) is consumed by regret over his unsettling friendship with Tommy. Having witnessed Tommy’s increasingly erratic behavior, John attempts to voice his growing suspicions to his wife, Fiona (Indira Varma). However, Fiona—already frustrated by John's perceived weakness—seeks space from him, leaving John isolated just as the village’s dark secrets begin to surface. Watch Coldwater Season 1 Episode 4: Episode 4 - Paramount+
The ITV psychological thriller (2025) reaches a fever pitch in Season 1, Episode 4 , as the delicate facade of rural Scottish life shatters for John and his family. Directed by Andrew Cumming and written by David Ireland, this episode, titled simply "Episode 4," serves as the season’s turning point, where the manipulative influence of neighbor Tommy (Ewen Bremner) finally leads to a harrowing and irreversible confrontation. Plot Recap: The Descent into Guilt coldwater s01e04 dsrip