
Under Salt Marsh (2026)
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
Network: Sky One, Sky Atlantic, Sky Max
Stars: Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey
Latest: S1 E6 · Feb 27, 2026 Status: Ended
Under Salt Marsh is a British crime TV series created by Claire Oakley that premiered in 2026 on Sky One, Sky Atlantic. The show has 1 seasons and 6 episodes so far and is ended. The latest episode, S1 E6, aired on Feb 27, 2026.
Seasons
Cast

Kelly Reilly
Jackie Ellis

Rafe Spall
Eric Bull

Naomi Yang
Jess Deng

Harry Lawtey
Dylan Rees

Dino Fetscher
Gareth Morgan

Dinita Gohil
Nisha Jones

Kimberley Nixon
Shell Hill

Julian Lewis Jones
Osian Northam

Jonathan Pryce
Solomon Bevan

Osian Emlyn
James Rees

Gwïon Morris Jones
Eddie Bevan

Martyn Ellis
Jim The Chippy
Details
| First Aired | Jan 30, 2026 |
|---|---|
| Last Aired | Feb 27, 2026 |
| Country | United Kingdom |
| Original Language | English |
| Also Known As | Sous le marais salé |
| Episode Runtime | 1h |
| Networks | Sky One, Sky Atlantic, Sky Max |
| IMDb ID | tt33741848 |
| TMDB ID | 262262 |











