TV series · Ended

Under Salt Marsh

Name: Under Salt Marsh
Genre: Crime, Mystery
Cast: Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey, Dino Fetscher

2026 · 1 season, 6 episodes · 60m episodes · Crime, Mystery · Sky One, Sky Atlantic · United Kingdom · Rated 15 (GB)

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.

Created by

Claire Oakley

Starring

Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey, Dino Fetscher, Dinita Gohil

Trailer

6.9Smart score

The TMDB rating, pulled toward the TV average (7.08) as if it had 85 extra average votes. Few votes means more pull.

TMDB6.6

68 TMDB votes · IMDb page

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Where to watch

Region

Not available to stream, rent or buy in United States.

Where each service has it

SkyShowtime: available in 20 countries

Subscription · 20Albania, Andorra, Bosnia & Herzegovina, Bulgaria, Croatia, Czechia, Denmark, Finland, Hungary, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden

Streaming data by JustWatch, via TMDB. Links open the JustWatch listing for United States.

Style & content

thrillerwales

Rating15 (GB)

Keywords from TMDB.

Connected through the crew

The Outlaws2021 · Writer Nikita Lalwani Say Nothing2024 · Director Mary Nighy Culprits2023 · Director Claire Oakley Traces2019 · Director Mary Nighy