Under Salt Marsh

4.0

2026

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.

Production

Trailers & Videos

Official Trailer

Official Teaser

Seasons

6 Episodes • Premiered 2026

1. Episode 1

When ex-detective-turned-teacher Jackie Ellis discovers one of her pupils dead, her estranged partner DS Bull returns to investigate. Jackie finds the body of her nine-year-old pupil, Cefin, seemingly drowned. The discovery revives the ghost of an unsolved cold case that rocked the town three years prior.