Under Salt Marsh (2026)

★ 6.7 1h 0m 1 Seasons 67 votes IMDb
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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.

Under Salt Marsh

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Cast

Kelly Reilly
Kelly Reilly as Jackie Ellis Age 49 · Surrey, England, UK Kelly Reilly (born 18 July 1977) is an English actress. Reilly's performance in After Miss Julie at the Donmar Warehouse made her a star of the London stage and earned her a nomination for a Laurence...
Rafe Spall
Rafe Spall as Eric Bull Age 43 · East Dulwich, London, England, UK Rafe Joseph Spall is an English actor on both stage and screen. He is perhaps best known for his roles in BBC's The Shadow Line, Channel 4's Pete versus Life, One Day, Anonymous, and the Ridley Scott...
Naomi Yang
Naomi Yang as Jess Deng Beijing, China Naomi Yang was born in Beijing but grew up in Manchester. She made her debut in Lilting (2014) and followed her incredible debut with guest roles in New Blood (BBC), DCI Banks (ITV) and Hollyoaks (Cha...
Harry Lawtey
Harry Lawtey as Dylan Rees Age 29 · Oxford, Oxfordshire, England, UK Harry Lawtey is a British actor (born 1996 in Oxford) who gained significant recognition for his breakthrough lead role as Robert Spearing in the financial drama series Industry (2020–2024), which he...
Dino Fetscher
Dino Fetscher as Gareth Morgan Age 38 Dino Fetscher was born on June 9, 1988 in Cardiff, Glamorganshire, Wales as Dino Fabian Gamecho. He is an actor, known for Humans (2015), Banana (2015) and Years and Years (2019)..
Dinita Gohil
Dinita Gohil as Nisha Jones Age 39 · Birmingham, West Midlands, England, UK Dinita Gohil is a British actress. She is best known for her performance as Amanda in the satirical film Greed (2019), and on-stage as Viola in the Royal Shakespeare Company production of Twelfth Nigh...

Seasons & Episodes

Now playing: Season 1, Episode 1

Audience Reviews

annatv22 10/10 Feb 02, 2026
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 6/10 Feb 22, 2026
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 4/10 Sep 05, 2026
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.

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