What happens when the world’s most valuable spy is finally caught? How did British and American intelligence hunt him down? And, was Klaus Fuchs a hero, a villain, or something in between?

Klaus Fuchs' final days as a free man were marked by growing suspicions, clandestine exchanges, and a relentless pursuit by MI5. The secrets he passed had already set the stage for a nuclear-armed Cold War, irreversibly altering the balance of global power. As the truth emerged, so too did the cost of his betrayal - a world reshaped by espionage, ideological conviction, and the stolen intelligence that fuelled an arms race.

Listen as David and Gordon take you inside the mind of the man who stole the bomb - and the world he left in his wake.

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Order a signed edition of David's latest book, The Seventh Floor, via this link.

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Email: [email protected]

Twitter: @triclassified

Assistant Producer: Becki Hills

Producer: Callum Hill

Senior Producer: Dom Johnson

Exec Producer: Tony Pastor

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