Igor Gouzenko, an expert at deciphering codes, comes to the Soviet embassy in Ottawa, Ontario, Canada in wartime 1943, along with a Soviet military colonel, Trigorin, and a major, Kulin, to set up a base of operations. Warned of the sensitive and top-secret nature of his work, Igor is put to a test by his superiors, who have the seductive Nina Karanova try her wiles on him. Igor proves loyal to not only the cause but to his wife, Anna, who arrives in Ottawa shortly thereafter with the news that she is pregnant. Trigorin and his security chief, Ranov, meet with John Grubb, the founder of Canada's branch of the Communist Party. One of their primary targets is uranium being used for atomic energy by Dr. Harold Norman, whom they try to recruit. In the years that pass, the atomic bomb ends the war. Anna, who has borne a son, now has serious doubts about the family's future. Igor begins to share these doubts, particularly after one of his colleagues, Kulin, has a breakdown and is placed under arrest. Once Igor is told that he is going to be reassigned back to Moscow, he decides to take action. He takes secret documents from the Embassy and tells Anna to hide them, in case anything happens to him. Trigorin and Ranov threaten his life, and the lives of his and Anna's families in the Soviet Union, but Igor refuses to return the papers. Grubb and several others are called back to the Soviet Union to answer for their failures. Canada's government places the Gouzenkos in protective custody and grants them residence. The film ends with the proviso that the family lives in hiding protected by the Royal Canadian Mounted Police. "Yet they have not lost faith in the future. They know that ultimate security for themselves and their children lies in the survival of the democratic way of life".
bought the rights to Gouzenko's articles about his experiences as Hollywood began producing films regarding Communist infiltration in the late '40s. The studio also purchased the rights to two historical books on Soviet espionage, George Moorad's Behind the Iron Curtain and Richard Hirsch's The Soviet Spies: The Story of Russian Espionage in North America, though no material from the two books was actually used in the film. Soviet sympathizers attempted unsuccessfully to disrupt location shooting in Ottawa, where Fox captured exteriors during a coldCanadian winter.
Reception
The New York Times note the movie's release, stating: "The Iron Curtain... has been under attack since January by various groups including the National Council of American-Soviet Friendship."