Author and filmmaker Richard Kerbaj tells the story of Oleg Lyalin - the hard-living, womanising KGB officer whose defection changed the course of the Cold War, and shaped the future of intelligence agencies on both sides of the Atlantic.

From SPYSCAPE, the home of secrets. A Cup And Nuzzle production. Series producer: Joe Foley. Produced by Max Bower.

Richard Kerbaj is the author of The Defector: The untold story of the KGB agent who saved MI5 and changed the Cold War.

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