Watch the official trailer for Under Salt Marsh
Everything you need to know about Under Salt Marsh
Under Salt Marsh is a limited series from writer, creator, and executive producer Claire Oakley, set in the fictional Welsh town of Morfa Halen, a tight-knit community 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 nine-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.
Cefin’s death summons Jackie's former partner, Detective Eric Bull, back to Morfa Halen to lead the investigation into a community he failed once before. Convinced the cases are linked, Jackie and Bull must reconcile and race to uncover long-buried secrets inside Morfa, before the storm breaks and all the evidence is gone for good.
An intimate and cinematic story, Under Salt Marsh takes audiences into the heart of a community bound by nature and fractured by an unthinkable crime.
When can I watch Under Salt Marsh?
The first two episodes of Under Salt Marsh premiered exclusively on Sky Atlantic on Friday, January 30th.
The rest of the series will be released weekly on Fridays.
The full release schedule is:
- January 30th: Episodes 1+2
- February 6th: Episode 3
- February 13th: Episode 4
- February 20th: Episode 5
- February 27th: Episode 6 (Finale)
Who stars in Under Salt Marsh?
Leading the cast of Under Salt Marsh are:
- Kelly Reilly (Yellowstone, Here) as Jackie Ellis
- Rafe Spall (The English, Jurassic World: Fallen Kingdom) as Detective Eric Bull
- Jonathan Pryce (The Crown, Slow Horses) as Solomon Bevan
Naomi Yang (Nightsleeper, Wolfe) as Jess Deng
Joining them are:
- Harry Lawtey (Industry, Joker Folie à Deux) as Dylan Rees
- Dinita Gohil (Sandman, Greed) as Nisha Jones
- Brian Gleeson (Bad Sisters, Phantom Thread) as Mac Jones
- Kimberley Nixon (Fresh Meat, Life and Death in the Warehouse) as Shell Hill
- Mark Stanley (Happy Valley, The Reckoning) as Danny Hill
- Dino Fetscher (Fool Me Once, Foundation) as Gareth Evans
- Lizzie Annis (The Witcher: Blood Origin, Extraordinary) as Cara Rees
- Rhodri Meilir (Pren Ar y Bryn/Tree On A Hill, Craith/Hidden) as Ned Bevan
- Julian Lewis Jones (House of the Dragon, Wheel of Time) as Osian Northam
- Gwïon Morris Jones* (Dal Y Mellt, The Winter King) as Eddie Bevan
- Morgan Watkins (Noughts and Crosses, Kingsman: The Secret Service) as Kieran Benbow
- William Thomas (Torchwood, We Are Seven) as Owen Ellis
- India Mullen (Normal People, Brassic) as Lydia Taman
- Eiry Thomas (Keeping Faith, The Bench) as Irene Hassan
- Janeks Babidorics (Brassic, We Were The Lucky Ones) as August Antonov
- Dritan Kastrati (Mobland, Kraven the Hunter) as Victor Antonov
- Julian Lewis Jones (House of the Dragon, Wheel of Time) as Osian Northam
- Marilyn Cutts (Death Valley, Home Invasion) as Carys Northam
- Martyn Ellis (Moonflower Murders, The New Adventures of Robin Hood) as Jim The Chippy
- Newcomer Amara Atwal as Nessa
- Newcomer Jack Thomas-Humphreys as Cefin Hill
- Newcomer Osian Emlyn as James Rees
What is the age rating of Under Salt Marsh?
Under Salt Marsh has been given a rating of 15 – meaning it has been deemed unsuitable for children and younger audiences.
This is due to the show containing:
- Depictions of dead bodies – including that of young children.
- Some use of swearing
- Some scenes of violence
- Dark themes that some may find upsetting
How to watch Under Salt Marsh on Sky
As a Sky Original, Under Salt Marsh is available to watch exclusively on Sky and NOW from 30 January 2026. It will not be available on Netflix, Prime Video, or Disney+.