Watch Online: Under Salt Marsh (2026)

Under Salt Marsh (2026): A Gripping Welsh Crime Mystery Comes to Sky

Brace yourself for a haunting descent into mystery and secrets. Under Salt Marsh is a compelling crime drama that combines atmospheric storytelling with a race against nature itself. When a former detective uncovers a tragic death that mirrors a devastating cold case from her past, she's forced to confront the demons she thought she'd left behind. This six-episode Sky series promises to keep you guessing until the very end.

Plot Overview: Dark Waters and Darker Secrets

"No secrets are safe from the storm."

Set in the isolated Welsh town of Morfa Halen, Under Salt Marsh follows Jackie Ellis, a former detective turned teacher, whose quiet life is shattered when she discovers the body of her young student, Cefin, apparently drowned. The discovery sends shockwaves through the community and dredges up painful memories of an unsolved mystery from three years prior—the disappearance of Jackie's own niece, Nessa, a case that cost her her career and her reputation.

As a catastrophic storm approaches from the sea, threatening to consume the mountain-locked town itself, Jackie finds herself drawn back into the dangerous world she left behind. With time running out and the town's existence hanging in the balance, she must uncover the truth before the storm—and perhaps the real culprit—destroys everything.

Release Date & Episode Guide

Under Salt Marsh premiered on January 30, 2026. The complete series consists of one season with 6 episodes, with the show having concluded its run.

Full Cast & Crew

The series features an exceptional ensemble cast bringing depth and complexity to this Welsh mystery:

• Kelly Reilly leads the cast as Jackie Ellis, the troubled former detective at the heart of the mystery
• Rafe Spall
• Jonathan Pryce
• Naomi Yang
• Harry Lawtey
• Bevan Thomas

Created and directed by: Elwen Rowlands, Claire Oakley, and Megan Spanjian

Production Details:

• Network: Sky One, Sky Atlantic, Sky Max
• Production Companies: Sky Studios, Little Door Productions
• Country of Origin: United Kingdom
• Language: English

Series Information at a Glance

• Genre: Crime, Mystery, Drama
• Type: Television Series
• Total Episodes: 6
• Status: Concluded
• Viewer Rating: 7.2/10

Where to Watch Under Salt Marsh Online

For the most current information on where to stream Under Salt Marsh (2026) online, check the Sky platforms including Sky One, Sky Atlantic, and Sky Max. Streaming availability may vary by region and subscription tier. Bookmark this page for the latest updates on how to watch this gripping crime series.

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