Oh, how those opposites do attract. As the First World War breaks out, a proud and pious missionary finds herself navigating a multitude of perils: the harsh African wilderness, dastardly German soldiers, and the sharp-tongued, gin-soaked steamboat captain who is her only ticket to safety. Naturally, true love can't be far behind (and neither can the Germans). Katharine Hepburn and Humphrey Bogart's chemistry sizzles in director John Huston's masterpiece of an adventure.