Based on a novel by C.S. Forester, adapted for the screen by Director / Writer John Huston. September 1914, in Africa during WW1, everyone is escaping the Huns. An unlikely pair, drunkard Charlie Allnut (Humphrey Bogart) and the reverend's (Robert Morley) spinster sister, Rose Sayer (Katharine Hepburn) escaping down the river form a relationship that may prove fatal to the Germans pride gunboat "The Louisa" with a 6 pounder. And then again, we have to get past rapids, leaches, and a German Fort.
Usually Blu-ray only enhances the visual but cannot enhance the story or dialog. However, with this presentation the DVD extra actually enhances the movie. Watch the film again after watching the extras. I did not realize that the film was shot in Technicolor. The sound (probably due to a better T.V. seems to have improved also.