TV SERIES

Under Salt Marsh

6.6/10
TMDB68 votes
2026Original: English1 seasons

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.

Genres: Crime, Mystery
Cast: Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey, Dino Fetscher

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THE STORY & THE PEOPLE

About Under Salt Marsh

No secrets are safe from the storm.

Under Salt Marsh (2026) is a TV series in the crime, mystery genres. The cast includes Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey.

Released
2026-01-30
Original language
English
Seasons
1
Episodes
6
Status
Ended
Production countries
United Kingdom
Production companies
Sky Studios, Little Door Productions
Creators
Claire Oakley
Writers
Jonathan Harbottle, Nikita Lalwani, Claire Oakley

Under Salt Marsh cast & characters

Audience reviews

6.6/10 from 68 TMDB votes. Ratings and reviews are supplied by TMDB. Reviews are attributed to their original authors.

annatv22

TMDB member review

Moody Welsh crime drama with a standout Kelly Reilly and strong supporting cast. A slow burn at first, but rewarding once it finds its pace. Highly recommend.

MovieGuys

TMDB member review

Strong cast, intriguing crime thriller, but as per usual let down by dreary DEI baggage. Let's start with the positives: the Welsh setting with a village under siege by rising ocean levels is a little unique. The crime drama, which spans two unsolved murders of children, is darkly disturbing with lots of twists and turns. Equally quality acting offers up well-rounded, often flawed characters. The downside is…

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Strong cast, intriguing crime thriller, but as per usual let down by dreary DEI baggage. Let's start with the positives: the Welsh setting with a village under siege by rising ocean levels is a little unique. The crime drama, which spans two unsolved murders of children, is darkly disturbing with lots of twists and turns. Equally quality acting offers up well-rounded, often flawed characters. The downside is by now wholly predictable. The incessant need to ram DEI messaging down the viewer's throat. Personally I find it downright tiresome and pointless. In summary, it could have been a great series, but it's spoilt to a decent degree by the compulsion to inject woke narratives into what is supposed to be entertainment. An okay watch.

tender_buttkiss

TMDB member review

Underwhelming. What could've been a gritty crime drama with a unique setting just gets bogged down by the interpersonal drama of the two lead characters. And I honestly couldn't give a crap about either. The red head one is carrying this bigole pity party on her back cause she stupidly thought her own sister may have killed her own child. And theother dudeid an unapologetic asshole with no clear reason why. Maybe…

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Underwhelming. What could've been a gritty crime drama with a unique setting just gets bogged down by the interpersonal drama of the two lead characters. And I honestly couldn't give a crap about either. The red head one is carrying this bigole pity party on her back cause she stupidly thought her own sister may have killed her own child. And theother dudeid an unapologetic asshole with no clear reason why. Maybe cause he's closeted? Who cares. If this was set in the 90s or aby decade earlier, I'd buy that. Tough cop character who's risen in the ranks, but homophobia and a toxic workplace keeps him from showing who he truly is. But it's not. Get over it. Love who you love and move the fuck on. I haven't watched the final episode yet but I'm hopeful all the characters die causemostof them are miserable, insufferable cunts. Except for Deng, she can live.

Questions about Under Salt Marsh

What is Under Salt Marsh about?

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.

Who stars in Under Salt Marsh?

Kelly Reilly, Rafe Spall, Naomi Yang, Harry Lawtey, Dino Fetscher, Dinita Gohil. See the cast cards above for character names.

How can I watch Under Salt Marsh online?

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