Haunted by a dying man's warning, Michael Sheen explores claims that chemicals have contaminated land in Wales and England; he follows a toxic trail to ask: who's in danger now?

Air Date: Aug 17, 2026

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Cast & Crew

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Cast

Crew

Michael Sheen

Host

Mags Gavan

Director

Jacci Parry

Producer

Lucy Taylor

Executive Producer

Michael Fraser

Executive Producer

Dan Ashby

Executive Producer

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Cast & Crew