From the Dutton Ranch to the Welsh Coast

Yellowstone star Kelly Reilly is stepping away from Beth Dutton’s fiery temper and steel-eyed swagger to take on one of her most vulnerable roles yet. The acclaimed British actress, best known for portraying the fiercely protective daughter of John Dutton in Taylor Sheridan’s hit Western, is set to lead the new Sky Original crime thriller Under Salt Marsh — and she looks almost unrecognizable in first-look photos.

In the six-part series, Reilly stars as Jackie Ellis, a former detective turned teacher whose quiet life is upended when shocking new evidence reopens a cold case that destroyed her career — and her family’s trust.

A Return to Shadows and Secrets

Set in the hauntingly atmospheric fictional Welsh town of Morfa Halen, Under Salt Marsh follows Jackie as she’s forced to reunite with her estranged former partner, Eric Bull, played by Trying star Rafe Spall. Together, they must unravel the mystery that once tore their lives apart — before a devastating storm washes away the truth forever.

According to the official synopsis, the series is “a deeply human portrait of resilience and community, blending atmospheric crime storytelling with emotional depth.”

First-look images reveal Reilly far removed from her sharp-suited Beth Dutton persona. One shows her drenched in rain, torch in hand, searching through the darkness of the Welsh wilderness — a stark contrast to Beth’s commanding presence on the Dutton Ranch.

A Stellar Cast and Creative Vision

Joining Reilly and Spall is an impressive supporting cast, including Jonathan Pryce (The Crown, Slow Horses) and Harry Lawtey (Industry), adding even more gravitas to the production.

The series is written and directed by Claire Oakley, the acclaimed filmmaker behind the critically praised indie Make Up. Oakley’s distinct storytelling style — equal parts moody and introspective — promises to make Under Salt Marsh a standout in Sky’s growing catalogue of prestige dramas.

Kelly Reilly’s Bold Next Chapter

Reilly’s transformation for the role has already captivated fans and critics alike. Known for her intensity and commanding presence as Beth Dutton in Yellowstone, this project offers a rare opportunity to see her explore vulnerability, guilt, and redemption through a completely different lens.

With Under Salt Marsh set to air on Sky and NOW in 2026, anticipation is already building for what could be one of the year’s most emotionally charged thrillers.

As one fan commented online, “Kelly Reilly can do anything — but seeing her as a broken detective instead of Beth Dutton? That’s going to be incredible.”