Walk East on Beacon (1952)

The film is about an attempt by communist moles to capture a top scientist and force him to work for the USSR. Professor Kafer (Finlay Currie) is worried because his son disappeared. Apparently, the communists have kidnapped him and say they’ll return him IF the Professor cooperates. Fortunately, American FBI agents are on the case and hope to not only rescue the son but break up this network of spies.
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