1951 American Classic 7.7 Stars Oscar Winner. Humphrey Bogart as Charlie Alnutt, a gin-swilling riverboat captain in WWI Africa and Katherine Hepburn as a straight-laced Methodist missionary spinster, Rose Sayer. In a masterpiece of human nature and versatility, Bogart once again surprises his audience with his talent and his ability to capture the essence of a tough guy to his ability to abandon his tough-guy facade be vulnerable and play a man who tries to please a woman. And boy does he! Rose, he soon discovers, is not a passive fear-stricken observer to this war. And after some coercing, she finally gets Charlie to agrees to use his boat to attack an enemy warship. Hepburn and Bogart have that chemistry - it's a beautiful love story, an adventure, and a pure pleasure watching these two fall in love. Rated PG and 105 minutes in length.