Better Than Mare of Easttown? Yellowstone Star Kelly Reilly Leads Sky’s Twisting New Crime Thriller Under Salt Marsh — A Fallen Detective, A Town Full of Secrets, and a Cold Case That Refuses to Stay Buried
Better Than Mare of Easttown? Yellowstone Star Kelly Reilly Leads Sky’s Twisting New Crime Thriller Under Salt Marsh — A Fallen Detective, A Town Full of Secrets, and a Cold Case That Refuses to Stay Buried
When Kelly Reilly steps into a role, she doesn’t just play it — she inhabits it. Best known to millions as the fiery, sharp-tongued Beth Dutton on Paramount’s juggernaut Yellowstone, Reilly is now bringing that same intensity to one of her darkest and most complex roles yet.
Sky has officially unveiled Under Salt Marsh, a six-part limited series set to premiere in 2026, and early buzz already has critics calling it “bigger than Mare of Easttown” and “the next Broadchurch.” Pairing Reilly with Trying star Rafe Spall, this atmospheric Welsh-set thriller promises not just mystery, but a devastating exploration of grief, obsession, and the lies that hold communities together — until they don’t.
The Story: A Detective Who Lost Everything
At the heart of Under Salt Marsh is Jackie Ellis (Reilly), a once-promising detective whose life imploded after a brutal cold case tore apart her career and shattered her family’s trust.
Three years after leaving the force in disgrace, Jackie has traded her badge for a quieter existence as a schoolteacher in the fictional seaside town of Morfa Halen. But when a violent once-in-a-generation storm sweeps in from the sea, she makes a discovery that reopens the very case that destroyed her.
Suddenly, Jackie is dragged back into the shadows she’s fought so hard to escape.
A Partnership Rekindled
To investigate, Jackie must reunite with her estranged partner, Eric Bull (Rafe Spall), a man she hasn’t spoken to since the case that broke them both. Their fractured relationship adds another layer of tension to a story already thick with suspicion, betrayal, and old wounds that never healed.
As the storm batters Morfa Halen, the two detectives find themselves racing against time. Every clue dredges up the past, every lead threatens to expose secrets some townsfolk would kill to protect. And as the synopsis teases, “they must confront a community haunted by secrets and fractured by grief, before the incoming storm washes away the evidence forever.”
A Town With Secrets Darker Than the Sea
The setting of Under Salt Marsh isn’t just a backdrop — it’s a character in itself. Morfa Halen, a fictional Welsh coastal town, is portrayed as both beautiful and suffocating. The sea looms constantly on the horizon, a reminder of nature’s power and the inevitability of change.
In true Broadchurch fashion, this is a story about how tragedy ripples through a community. Neighbors turn on one another, old resentments resurface, and the storm outside mirrors the chaos brewing within.
Kelly Reilly’s Biggest Role Yet
For Kelly Reilly, the leap from Yellowstone to Under Salt Marsh feels less like a departure and more like an evolution. As Beth Dutton, she embodied rage, resilience, and raw vulnerability. As Jackie Ellis, she channels those same traits into a woman wrestling with guilt, grief, and a desperate need for redemption.
Industry watchers are already predicting Emmy buzz, noting how Reilly thrives in roles where the veneer of control barely hides the turmoil underneath. “She was born to play complicated women,” one critic tweeted after the series was announced.
Rafe Spall and a Star-Studded Ensemble
Reilly isn’t carrying the weight alone. Rafe Spall, known for his versatility in dramas like Trying and thrillers like The Ritual, steps in as Eric Bull, Jackie’s former partner. Their dynamic — part hostility, part unspoken loyalty — promises to be the emotional heartbeat of the series.
The supporting cast is equally impressive:
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Jonathan Pryce (The Crown) brings gravitas as a community leader with secrets of his own.
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Brian Gleeson (Bad Sisters) adds bite as a figure caught between loyalty and survival.
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Naomi Yang, Dinita Gohil, Kimberley Nixon, and Harry Lawtey round out the ensemble, ensuring that no corner of Morfa Halen is free from suspicion.
Claire Oakley at the Helm
Perhaps the most intriguing element is behind the camera. The series is created, written, and directed by Claire Oakley, the filmmaker behind the acclaimed psychological drama Make Up. Oakley is known for weaving atmosphere and intimacy into suspenseful storytelling — making her the perfect choice for a show that must balance small-town realism with high-stakes drama.
Her vision, combined with Sky’s backing, suggests Under Salt Marsh will avoid falling into formula and instead deliver a uniquely haunting crime saga.
Why the Comparisons to Mare of Easttown and Broadchurch?
It’s almost inevitable that Under Salt Marsh will be measured against other prestige crime dramas. Like Mare of Easttown, it features a female detective weighed down by past failures, forced to re-enter an investigation that cuts too close to home. Like Broadchurch, it’s set in a small coastal town where the landscape itself seems complicit in the tragedy.
But where Under Salt Marsh distinguishes itself is in its storm-driven urgency. This isn’t just about solving a murder or exposing lies — it’s about survival, both personal and communal. Every wave, every gust of wind feels like it could swallow the truth forever.
A Must-Watch for 2026
Sky has yet to announce an exact release date, but Under Salt Marsh is slated to debut on Sky and NOW in 2026. For UK viewers, it’s already being positioned as one of the network’s flagship dramas for the year, joining the ranks of Chernobyl and Gangs of London as bold, ambitious storytelling.
Until then, fans can look forward to first-look images and trailers that promise to heighten anticipation. Early stills — including one of Reilly standing in a torchlit field under storm clouds — have already gone viral, with viewers praising the moody visuals and cinematic scope.
Final Thoughts
In an era saturated with crime dramas, it takes something special to stand out. Under Salt Marsh looks poised to do just that. With Kelly Reilly stepping into her most layered role yet, Rafe Spall adding emotional firepower, and Claire Oakley shaping the story with precision and style, this six-part series could well become Sky’s next global hit.
If Mare of Easttown was about the claustrophobia of a Pennsylvania town and Broadchurch was about grief on the Dorset coast, Under Salt Marsh might be the definitive story of what happens when guilt, secrets, and nature itself collide.
So mark your calendars — because when this storm hits in 2026, you won’t want to miss a single second.