6 episodes
First episode: E1

No secrets are safe from the storm.
Morfa Halen is a tight-knit Welsh town precariously nestled between towering mountains and a fast-encroaching sea that threatens its very existence. As a once-in-a-generation storm begins to gather far out at sea, former detective turned teacher Jackie Ellis discovers the body of her 8-year-old pupil, Cefin, seemingly drowned. 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.
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6 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Under Salt Marsh first aired on January 30, 2026.
Under Salt Marsh currently has 1 season and 6 episodes.
Under Salt Marsh is scheduled to air next on February 27, 2026 at 9 PM GMT on Sky Atlantic. The next listed episode is Season 1 Episode 6.
Go to Season 1 Episode 6