The Red Danube

Assigned to repatriate Soviet nationals from Vienna after World War II, Col. Michael S. Nicobar (Walter Pidgeon) and his aides, Maj. John McPhimister (Peter Lawford) and Audrey Quail (Angela Lansbury), relocate from Rome to carry out their mission. The three stay in a convent headed by a Mother Superior (Ethel Barrymore) who happens to be protecting Maria Buhlen (Janet Leigh), a Soviet ballerina wanted by the authorities. Soon, Nicobar questions his duty when he and McPhimister fall for Buhlen.