TV series
No secrets are safe from the storm.
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.
Watch trailerAvailability
Checked Jul 22, 2026
Under Salt Marsh premiered January 30, 2026. We don't have a confirmed streaming, rental or purchase option yet.
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.
Cast, crew and production details
Kelly ReillyJackie Ellis
Rafe SpallEric Bull
Naomi YangJess Deng
Harry LawteyDylan Rees
Dino FetscherGareth Morgan
Dinita GohilNisha Jones
Kimberley NixonShell Hill
Julian Lewis JonesOsian Northam
Sky OneUnited Kingdom
Sky AtlanticUnited Kingdom
Sky MaxUnited Kingdom
Sky StudiosUnited Kingdom
Little Door ProductionsUnited KingdomWatch options above are for the show and may vary by season or episode.
Episode 1
When ex-detective-turned-teacher Jackie Ellis discovers one of her pupils dead, her estranged partner DS Bull returns to investigate.
Directed by Claire OakleyGuest stars Mark Stanley, Lizzie Annis, Brian Gleeson, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson, Amara Atwal
Where to watch Under Salt Marsh
Episode 2
Old accusations resurface as Jackie and Bull must put aside years of mistrust before the town's tensions ignite into violence
Directed by Claire OakleyGuest stars Leisa Gwenllian, Mark Stanley, Lizzie Annis, Brian Gleeson, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson
Where to watch Under Salt Marsh
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.
Directed by Mary NighyGuest stars Leisa Gwenllian, Mark Stanley, Lizzie Annis, Brian Gleeson, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson
Where to watch Under Salt Marsh
Episode 4
DNA evidence exposes a devastating truth, forcing Jackie and Bull to choose between protecting themselves or those they love.
Directed by Mary NighyGuest stars Brian Gleeson, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson, Amara Atwal, Dritan Kastrati, Marilyn Cutts
Where to watch Under Salt Marsh
Episode 5
Rising floodwater cuts Morfa Halen off from the world as another body is discovered, with Bull closing in on the truth behind an illegal operation at the heart of all three cases.
Directed by Claire OakleyGuest stars Mark Stanley, Lizzie Annis, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson, Amara Atwal, Dritan Kastrati
Where to watch Under Salt Marsh
Episode 6
Jackie and Bull discover the horrifying truth behind the crimes that haunt Morfa. As Bull fights for his life and Jackie faces an unbearable choice, the storm reaches its peak.
Directed by Claire OakleyGuest stars Mark Stanley, Lizzie Annis, Brian Gleeson, Osian Emlyn, Gwïon Morris Jones, Martyn Ellis, Sam C. Wilson, Amara Atwal
Where to watch Under Salt MarshEpisode information updated Jul 22, 2026
Similar shows available in United States are shown first.
