Kelly Reilly and Rafe Spall star in gripping new Sky Original drama Under Salt Marsh – first look teaser revealed
The six-part drama, set in a close-knit Welsh town fractured by an unspeakable crime, will launch on Sky and streaming service NOW in 2026
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Sky has released the teaser trailer and a new set of images for Under Salt Marsh, a gripping Sky Original crime drama set in the fictional Welsh town of Morfa Halen. The series stars Kelly Reilly (Yellowstone, Pride & Prejudice) as Jackie Ellis and Rafe Spall (Trying, Life of Pi) as Detective Eric Bull.
Created, written and directed by Claire Oakley (Make Up), the six-part series opens as a once-in-a-generation storm rolls in from the sea. Former detective turned teacher Jackie Ellis (Reilly) makes a shocking discovery that reopens the wounds of a three-year-old cold case which cost her both her career and her family’s trust.
Forced to reunite with her estranged police partner Eric Bull (Spall), Jackie is drawn back into an investigation that will shake Morfa Halen to its core. Together, they must confront a community haunted by secrets and fractured by grief, before the incoming storm washes away the evidence forever.
With a stellar supporting cast including Naomi Yang (Chimerica), Jonathan Pryce (The Crown), Dinita Gohil (Treason), Brian Gleeson (Bad Sisters), Kimberley Nixon (Queenie), and Harry Lawtey (Industry), Under Salt Marsh blends atmospheric crime storytelling with a deeply human portrait of resilience and community.
Additional cast includes Mark Stanley (Happy Valley, The Reckoning), Dino Fetscher (Fool Me Once, Foundation), Lizzie Annis (The Witcher: Blood Origin, Extraordinary), Rhodri Meilir (Pren Ar y Bryn, Craith), and Julian Lewis Jones (House of the Dragon, Wheel of Time).
Under Salt Marsh will launch on Sky and streaming service NOW in 2026
Series Credits
Under Salt Marsh is created by Claire Oakley. The series is written by Claire Oakley, Jonathan Harbottle (Episodes 3 & 5) and Nikita Lalwani (Episode 4). The lead director is Claire Oakley, with Mary Nighy directing Episodes 3 and 4. Under Salt Marsh is produced by Little Door Productions in association with Sky Studios. The production received support from the Welsh Government via Creative Wales. The producers are Scott Bassett and Emma Duffy. Executive Producers are Elwen Rowlands for Little Door Productions, Claire Oakley, Kelly Reilly, and Megan Spanjian for Sky Studios.
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