The Adventures of Tartu (1943)
Stevenson, a British soldier fluent in Rumanian and German, goes undercover to sabotage a German poison-gas factory. He turns himself into Jan Tartu, a member of the Rumanian Iron Guard. But when his contacts are destroyed, his cover may get him killed by the very underground he needs to succeed.
Director: Harold S. Bucquet
Writers: John Lee Mahin (screenplay), Howard Emmett Rogers (screenplay)
Stars: Robert Donat, Valerie Hobson, Walter Rilla