Traitors (2023): Season 1, Episode 3

1 - 3: The Gentleman Spy: George Blake

The activities of George Blake, who while a prisoner in North Korea, was recruited by the Soviets to act as a double agent against the British. Discovered in 1961 and sentenced to 42 years in prison, he managed escape and fled to the Soviet Union in 1966 to live out his days east of the Iron Curtain.