This film is a Hitchcock classic, and a must see -- It has spawned many derivatives -- While the film is based on a novel by Patricia Highsmith, there are significant plot differences (see Jim Clark's commentary in Links section, and if available, the extensive audio comments included with the DVD) -- Hitchcock himself has admitted that Bruno is likely a homosexual -- The US censorship rules then in effect have greatly obscured it though -- Don't feel embarrassed, should you be gay, that you didn't pick up on it -- My gaydar is so weak that I didn't see it until commentators pointed it out -- Unfortunately, Hitchcock's and Highsmith's Bruno is not a positive gay character, reflecting I suppose the prevailing views of the time.