Spencer Tracy and team up for this World War II adventure, based on an supposedly true incident from World War II. Stewart plays John Royer, an ex-newspaper reporter with a backhand knowledge of Malaya, and Tracy plays a criminal named Carnaghan, doing time in Alcatraz for smuggling. They are brought together for an undercover assignment -- to smuggle a large shipment of rubber out of Japanese-held territory in Malaya and deliver the tonnage to awaiting U.S. ships. Carnaghan and Royer plod through the jungles and have to deal with several unscrupulous contacts including a man calling himself The Dutchman (Sydney Greenstreet), a helpful FBI agent named Kellar (John Hodiak), and a sneaky Japanese officer by the name of Colonel Tomura (Richard Loo).