Yellowstone star Kelly Reilly is set to lead a new crime drama set in Wales.
The actor, best known for her role as Beth Dutton in the hit Western drama, has been cast in a Sky Original series titled Under Salt Marsh (via Variety).
Created by Claire Oakley, Under Salt Marsh is set in the fictional Welsh town of Morfa Halen and will see Reilly play detective turned teacher Jackie Ellis, who discovers the body of her 8-year-old pupil Cefin after he seemingly drowned during a "once-in-a-generation" storm.
![kelly reilly](https://hips.hearstapps.com/hmg-prod/images/kelly-reilly-for-paramount-6441421ba8640.jpg?crop=0.634xw:0.312xh;0.202xw,0.0295xh&resize=980:* "Premiere Party For Paramount Network's "Yellowstone" Season 2 - Arrivals")
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The official logline continues: "The discovery sends shockwaves through the community, reviving the ghost of an unsolved cold case that rocked the town three years prior – the disappearance of Jackie’s niece, Nessa, which cost her career.
"Cefin’s death summons Jackie’s former partner, Detective Eric Bull, back to Morfa Halen to lead the investigation into a community he failed once before.
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"Convinced the cases are linked, Jackie and Bull must reconcile and race to uncover long-buried secrets inside Morfa, before the storm breaks and all the evidence is gone for good."
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Oakley will co-write the show alongside Jonathan Harbottle and Nikita Lalwani, executive produce and lead direct, while Mary Nighy is set to direct the third and fourth episodes. Filming is scheduled to begin later this year.
"Under Salt Marsh is a crime thriller set in a community deeply connected to its environment, and interwoven with the heartache, fears, dreams and secrets of its people,” Oakley shared in a statement.
"At the heart of it all is Jackie, a character who embodies the wildness of the place we’re depicting. She’s free-spirited, compassionate, and determined, with a steely resolve that makes her truly of the land. We’re absolutely thrilled to have Kelly Reilly bringing Jackie to life."
Under Salt Marsh will air on Sky and Now.
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Social Executive, Entertainment Portfolio After completing her joint honours degree in Journalism and English Literature at Cardiff University, Iona joined Digital Spy as a Content Production Intern in 2022, where she wrote across both news and features, specialising in TV and movies. Following her internship, Iona continued contributing to the site as a freelance reporter, becoming social executive for the Hearst UK entertainment portfolio in summer 2025. Iona now leads the DS social channels, covering red carpets with stars such as Paul Mescal, Austin Butler, and more.
