Fresh from the success of The Maltese Falcon, John Huston and Humphrey Bogart reunited for this espionage drama set on a Japanese steamer. When ex-Army officer Rick Leland (Bogart) boards the boat, the audience soon learns that few of the passengers are whom they claim to be -- not the small-town girl (Mary Astor) en route to Los Angeles, not the Japanese-American (Victor Sen Yung) visiting the old country and perhaps not even Leland himself.