
What is the truth lying beneath our feet? Michael Sheen uncovers claims of conspiracy, complicity and denial over alleged toxic 'forever chemical' contamination in South Wales.
Next episode
August 24, 2026

Episode 1
Aug 17, 2026
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?

Episode 2
Aug 24, 2026
Ten years after a dying whistleblower's warning, Michael Sheen follows a trail of toxic chemical dumping in Wales and asks whether it could still be harming people’s health.