The 6 x 60′ thriller will shoot in Welsh locations including Cardiff and north Wales.

Filming gets underway in Wales this week (w/c 7 October) on Under Salt Marsh, a new Sky Original crime thriller starring Kelly Reilly.

Shooting in Welsh locations including Cardiff and north Wales, the 6 x 60’ drama comes from Little Door Productions in association with Sky Studios and writer/director Claire Oakley.

Set in the fictional Welsh town of Morfa Halen, a tight-knit community located between huge mountains and an encroaching sea, the story centres on former detective-turned-teacher Jackie Ellis (played by Reilly) who, as a massive storm gathers out at sea, discovers the body of her young pupil, Cefin, seemingly drowned.

The tragedy reignites an unsolved cold case from three years before – the disappearance of Jackie’s niece Nessa. Rafe Spall, Jonathan Pryce, Naomi Yang and Harry Lawtrey also star.

Showrunner Oakley also exec produces alongside Little Door’s Elwen Rowlands and Sky Studios’ Megan Spanjian. The series producer is Scott Bassett; Oakley is lead director with Mary Nighy at the helm for Episodes 3 and 4. Other writers are Jonathan Harbottle and Nikita Lalwani. The production is supported by the Welsh government via Creative Wales.

At the time of the commissions news, Rowlands said: “It’s been a pleasure developing this series with the inspirational Claire Oakley. Sky Studios coming onboard has given the show a perfect home and now we have the hugely talented Kelly Reilly taking on the lead role – we couldn’t be happier.”

Director of original series, Sky Studios UK&I, Meghan Lyvers, added; “Under Salt Marsh is a uniquely powerful drama which we are incredibly proud to support at Sky Studios. Claire Oakley is an exceptional creative talent who has crafted a deeply emotional and universal story which explores themes of loss, resilience, and community, all whilst pushing the boundaries of the crime thriller genre.”