Stalin's captive

After World War II, German scientist Nikolaus Riehl and his family were held captive in the Soviet Union from 1945 to 1955. His story is uniquely interesting in part because of its historical content, in part because he was bilingual in German and Russian, having grown up in St. Petersburg as the son of a German father and a Russian mother, and as a result of his warm human interest in the Russian people. He tells his story in Ten Years in a Golden Cage. Frederick Seitz has written a detailed introduction that provides a historical context for his translation (from German) of Riehl's book.