Series synopsis
Under Salt Marsh is a British crime mystery television series that premiered on Sky One on January 30, 2026. It ended on February 27, 2026. It was created by Claire Oakley. It stars Kelly Reilly, Rafe Spall, Naomi Yang and Harry Lawtey.
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 n ...
Premise
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.
Premise: No secrets are safe from the storm.
Cast and characters
Leading cast
- Kelly Reilly as Jackie Ellis
- Rafe Spall as Eric Bull
- Naomi Yang as Jess Deng
- Harry Lawtey as Dylan Rees
- Dino Fetscher as Gareth Morgan
- Dinita Gohil as Nisha Jones
- Kimberley Nixon as Shell Hill
- Julian Lewis Jones as Osian Northam
Supporting cast
- Jonathan Pryce as Solomon Bevan
Guest cast
- Leisa Gwenllian as Kath Bevan
- Mark Stanley as Danny Hill
- Lizzie Annis as Cara Rees
- Brian Gleeson as Mac Jones
- Osian Emlyn as James Rees
- Gwïon Morris Jones as Eddie Bevan
- Martyn Ellis as Jim The Chippy
- Sam C. Wilson as Bryn Bevan
- Amara Atwal as Nessa Taman
- Dritan Kastrati as Victor Antonov
- Marilyn Cutts as Carys Northam
- Seeta Indrani as Ira Taman
Episodes
This series spans 1 season with 6 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 6 | January 30, 2026 | February 27, 2026 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Episode 1 When ex-detective-turned-teacher Jackie Ellis discovers one of her pupils dead, her estranged partner DS Bull returns to investigate. |
January 30, 2026 |
| 2 |
Episode 2 Old accusations resurface as Jackie and Bull must put aside years of mistrust before the town's tensions ignite into violence |
January 30, 2026 |
| 3 |
Episode 3 With the town turning on itself as long-buried secrets emerge, Jackie and Bull's fragile partnership is tested by a new discovery. |
February 6, 2026 |
Production
Release
| Original network/platform | Sky One |
|---|---|
| First aired | January 30, 2026 |
| Last aired | February 27, 2026 |
| Runtime | 60 minutes |
| Status | ended |
| Schedule | Friday at 21:00:00 |