Overview
- The series follows Jackie, a teacher and former detective, as she investigates the death of an eight-year-old pupil in the fictional coastal town of Morfa Halen.
- Rafe Spall co-stars as her former partner, with Jonathan Pryce among the ensemble.
- Filmed along the Welsh coastline from October 2024 to February 2025, the production leans into the region’s stark landscapes and weather.
- Reilly described returning to the UK as an emotional homecoming and told Radio Times the location’s energy shaped her performance.
- Under Salt Marsh premieres in the UK on Sky and NOW on Friday, January 30, and Reilly is also slated to reprise Beth Dutton in the Yellowstone spin-off The Dutton Ranch later in 2026.