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This standard spy-suspense yarn of political intrigue is based on the East-West division in Germany at this time. On the West German side of the political dividing line, a spy ring of East Germans has been prying state secrets out of workers in the West German government. Their technique is straightforward. They promise to release relatives of the workers to West Germany in exchange for the information. When a prisoner in East Germany is released and returns to the West, he discovers that his wife has been murdered. Immediately suspecting an East German connection, he starts to hunt down and locate the members of the spy ring.