This is a cracking suspense film that seems to give the game away in the opening shots, but has an extremely clever suspense and surprise ending worthy of Hitchcock himself to climax a seemingly familiar race against time to prevent a wrongful execution, that plot has been done a hundred times on film and on TV over the years but never as well as this. Superb central role (Redgrave) a terrific actor and a really good supporting cast make this no ordinary suspenser.