TV series

Under Salt Marsh

2026 · 1 season

A brooding, atmospheric mystery that wraps you in dread as a storm closes in on a small town full of secrets.

Tagline: No secrets are safe from the storm.
Overview: 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.
How it feels: Dark, tense, melancholic and eerie. Slow-burning and needs your attention.
About: Grief, mystery, isolation, guilt
Content: Mild violence, gore, sexual content and language.
Note: Written by AI, so it can be wrong. Full breakdown

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Written by AI. It can be wrong.

Full breakdown

Tone: darkstrength 3 of 3
tensestrength 3 of 3
melancholicstrength 2 of 3
eeriestrength 2 of 3
Pacing: slow-burn, 1 of 4, from slow-burn to relentless
Attention: engaged, 3 of 4, from background-friendly to demanding
Themes: grief
mystery
isolation
guilt
family
Places: small town
countryside
sea
Era: contemporary
Audience: adult
Form: serialised
Content intensity: Gore mild
Language mild
Violence mild
Sex mild