Written and presented by Joe Dunthorne (based on his book Children of Radium: A Buried Inheritance)

In Munich, Joe traces a very different side to his family history, events that were left out of his great-grandfather’s memoir.

Written and presented by Joe Dunthorne

After the war, Joe's great-grandfather attempts to build a new life in the United States where his mental health begins to deteriorate.

Written and presented by Joe Dunthorne

A letter from Joe’s great-grandfather, leads him to the east of Turkey and the story of a massacre, kept silent for many years

Written and presented by Joe Dunthorne

Joe follows in his great-grandfather's footsteps to Turkey where he was employed, it seems, making gas masks.

Written and presented by Joe Dunthorne

Joe's research into his great-grandfather's work takes him to Ammendorf, south of Berlin - one of the key sites of Nazi Germany's chemical weapons production.

Written and presented by Joe Dunthorne

Dangers lurk beneath the soil, in the town where Joe's great-grandfather worked.

Written and presented by Joe Dunthorne

Drawn to a family legend about his German-Jewish family’s dramatic escape from Nazi Germany in 1936, the writer Joe Dunthorne accidentally discovers a far more disturbing history.

A conversation with his granny, who spent her childhood brushing her teeth with the radioactive toothpaste her father Siegfried manufactured, leads Joe to finally read his great-grandfather's nearly 2000-page long unpublished memoir. Hidden on page 1692 he finds an unsettling confession.

Written and presented by Joe Dunthorne, (based on his book Children of Radium: A Buried Inheritance)

Drawn to a family legend about his German-Jewish family’s dramatic escape from Nazi Germany in 1936, the writer Joe Dunthorne accidentally discovers a far more unsettling history.

A confession hidden on page 1692 of his great-grandfather Siegfried’s unpublished memoir leads Joe into a story of radioactive toothpaste, unexploded bombs and erased histories, exploring the many ways the past continues to haunt the present - even when we try to ignore it.

A Falling Tree production for BBC Radio 4

In 2006 an Australian investment bank bought Thames Water – Britain’s biggest water company. Everything went well for a bit. And then people started noticing something strange. Sewage in the water. Leaking pipes. Hosepipe bans. Now in 2025 Thames Water is on the brink of financial collapse and looking for new owners. There is even talk about doing something shocking. Nationalisation.

So what went wrong? Why did this water company which makes healthy profits year on year fail so badly. And what can that tell us about how the dream of free market capitalism has turned out, not just here but also in Donald Trump’s America.

David Dimbleby traces the history of an idea that charts his lifespan. It started on a chicken farm in Sussex, gained traction in the shadows of post-war London and rose to heights of excess in the new champagne bars of the City.

But who are the little-known people behind it? What did they want? And is the free market here to stay? Or are we entering a new era?

Presenter: David Dimbleby

A Samizdat Audio production for BBC Radio 4