When you get a story written quite this magnificently it would take an extreme amateur to screw it up - and Francis Ford Coppola is no amateur. Marlon Brando, Al Pacino, James Caan and Robert Duvall represent the epitome of guile, sophistication, loyalty, honour and brutality in this self-adapted Mario Puzo story of the unambiguously ambitious "Corleone" family - they start with nothing and so the only way is up; however and whatever they need to do to get there. The characterisations are layered and colourful; Diane Keaton has no idea what she's getting herself into! John Cazale is great as t...