The Last Witness - 6. Off the Scale

Dan rushes to a site in South Wales, where PCBs are reportedly escaping from an old landfill site. He and Lucy take their strange team on the road, to test the earth in towns and villages countrywide. The results could reveal whether Douglas' prophecy has come true.

Buried is the award-winning true-crime series digging into some of the most disturbing environmental stories in history. In this new investigation, reporters Dan Ashby and Lucy Taylor team up with the film star Michael Sheen. Together, they dig into the unseen files of a man who said he was beaten up and put under police protection, after alleging that a chemical had contaminated the food chain.

Produced and presented by Dan Ashby and Lucy Taylor Research by Georgie Styles Sound design and mixing by Jarek Zaba Original music and sounds by Phil Channell Executive Producers: Philip Abrams and Anita Elash Commissioning Editor: Dan Clarke

A Smoke Trail production for BBC Radio 4