Under Salt Marsh (2026)

About This Series

Under Salt Marsh is a crime and mystery series created by Claire Oakley. Its leading cast includes Kelly Reilly, Rafe Spall and Naomi Yang. It premiered on January 30, 2026 on Sky One. TMDB lists 1 season and 6 episodes so far and has ended.

Synopsis

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.

Synopsis from TMDB.

Official Trailer

Official Trailer · plays from YouTube

• Official Teaser (opens YouTube)

Cast

• Kelly Reilly Jackie Ellis 6 episodes
• Rafe Spall Eric Bull 6 episodes
• Naomi Yang Jess Deng 6 episodes
• Harry Lawtey Dylan Rees 6 episodes
• Dino Fetscher Gareth Morgan 6 episodes
• Dinita Gohil Nisha Jones 6 episodes
• Kimberley Nixon Shell Hill 6 episodes
• Julian Lewis Jones Osian Northam 6 episodes
• Jonathan Pryce Solomon Bevan 6 episodes
• Osian Emlyn James Rees 6 episodes
• Gwïon Morris Jones Eddie Bevan 6 episodes
• Martyn Ellis Jim The Chippy 6 episodes
• Sam C. Wilson Bryn Bevan 6 episodes
• Amara Atwal Nessa Taman 6 episodes
• Mark Stanley Danny Hill 5 episodes
• Lizzie Annis Cara Rees 5 episodes
• Brian Gleeson Mac Jones 5 episodes
• Dritan Kastrati Victor Antonov 5 episodes

Seasons

• Miniseries2026 · 6 episodes