even though some unrealistic thing happen at the end ( i. e. a cop shoot a gun into a crowded merry go round where any number of innocent could be kill ) and this still be an intense and enjoyable thriller and one of alfred hitchcock well film . robert walker be excellent a the chilling nutcase and really convince give a fascinating performance that be almost too creepy at time . his co star in here and farley granger and be okay but be no match for walker and either in act or in the character they play . it the typical hitchcock film with some strange camera angle and immoral theme and innocent man get in trouble and etc . unlike a lot of his other film and i think this one be a fast move story with a very few dull spot . be an ex tennis player and i enjoy his footage of some excellent old net match that feature some good rally . hitchcock real life daughter patricia have an interesting and unique minor character role in here . she do not just get the job because of her dad while she can act . also of note represent the dvd have both the british and american version and there be some difference in the story . this be a classic film that be still refer to in modern day film and even comedy such a throw momma off the train .