

Under Salt Marsh
2026-01-30 · 60 min / episode · ★ 6.6
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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Production details
- Creators
- Claire Oakley
- Production companies
- Sky Studios, Little Door Productions
- Countries
- United Kingdom
- Status
- Ended
Top Cast
Kelly ReillyJackie Ellis
Rafe SpallEric Bull
Naomi YangJess Deng
Harry LawteyDylan Rees
Dino FetscherGareth Morgan
Dinita GohilNisha Jones
Kimberley NixonShell Hill
Julian Lewis JonesOsian Northam
Jonathan PryceSolomon BevanTitle information and images are supplied by TMDb. Explore our discovery guide for advice on comparing metadata and legal viewing options.
Where to watch
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Availability not listed for this country.
Seasons & episodes
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