
Episode 1
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?
For years, Welsh actor Michael Sheen has been haunted by a story he discovered online about little-known farming consultant Douglas Gowan, who claimed the people of Wales had been poisoned by decades of toxic chemical dumping of polychlorinated biphenyls (PCBs) - a known class 1 carcinogen often called the 'godfather of forever chemicals'.
Unable to let the story go, Michael follows a toxic trail that leads him to ask: who’s in danger now?
More episodes
Previous
You are at the first episode
Clips
![]()
"How could they possibly think they could get away with that?"
Duration: 02:57
![]()
Michael Sheen looks into a potential chemical scandal in Wales
Duration: 03:57
Broadcasts
Featured in...
![]()
Toxic Truths Exposed
The shocking stories of danger ignored, warnings buried and truths exposed
![]()
I Was There: Witness to History
Walk through history, hearing first hand accounts of people who were there.
![]()
Inside the 20th Century
20th Century historical moments




