Humphrey Bogart and Raymond Massey star in a unique film that shows what convoy duty was like for the Merchant Marine in World War II. When their tanker is torpedoed by a German U-boat, Bogart and Massey take command of a Liberty Ship, and their convoy must play cat and mouse with a German wolf pack. While clearly shown in a bad light, the Germans are not heavily demonized, which was unusual for a patriotic war film of the time (1943). Another unusual choice was having the Germans speaking only