Marathon Man. A postgrad student (Dustin Hoffman), who is oblivious to the activities of his older brother (Roy Scheider), who he believes to be an ordinary businessman, finds himself dragged into a terrifying conspiracy involving millions in stolen diamonds and an ageing Nazi war criminal (Laurence Olivier) in this cracking mid-70s thriller. I've seen this once before like 20 years ago, but I couldn't really remember it and thoroughly enjoyed it. Great film. Looks fantastic on Blu ray as well.