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In 1939, Russian engineer Ivan Kouznetsoff (Laurence Olivier) is in England to tout his new aeronautical design. Unfortunately, the distrustful Brits ignore Ivan's ingenuity and deride communism. Ivan's opinion of his hosts is similarly low; he feels that the British are uncultured and unkind. Ann (Penelope Ward), Ivan's landlady, is particularly wary of her foreign tenant -- that is, until the Russians and British band together against the Nazis, making Ivan a guest of honor. Wikipedia