Igor Gouzenko, a Soviet Embassy code clerk, defected to the West in 1945, taking secret documents that dismantled Russia's Western Hemisphere spy network. His story inspired 20th Century-Fox's 1947 film "The Iron Curtain", shot in semi-documentary style.
Operation Manhunt
Igor Gouzenko, a Soviet Embassy code clerk, defected to the West in 1945, exposing a large-scale Russian spy network in the Western Hemisphere by bringing classified documents with him.