Yellowstone star Kelly Reilly is set to return to British screens in a new Sky Original crime drama, Under Salt Marsh, which has just released its first teaser trailer. The six-part series, created by Claire Oakley, follows former detective Jackie Ellis (Reilly) as she reunites with her ex-partner Eric Bull (Rafe Spall) to investigate a cold case in the fictional Welsh town of Morfa Halen.
The trailer, released on Thursday, 6th November, showcases the atmospheric and haunting Welsh coastline, setting the stage for a gripping investigation. The synopsis reveals that a once-in-a-generation storm uncovers a shocking discovery, reopening a three-year-old case that cost Ellis her career and family trust.
Joining Reilly and Spall is an ensemble cast including Jonathan Pryce (The Crown, Slow Horses), Naomi Yang (Chimerica), Dinita Gohil (Treason), Brian Gleeson (Bad Sisters), Kimberley Nixon (Queenie), and Harry Lawtey (Industry).
Sky describes the series as blending “atmospheric crime storytelling with a deeply human portrait of resilience and community.” Under Salt Marsh is one of Reilly's first roles after the conclusion of Yellowstone, though she is expected to reprise her iconic role as Beth Dutton in an upcoming spin-off, reportedly titled The Dutton Ranch, set for 2026.
Under Salt Marsh will premiere on Sky and NOW in 2026.
