The Woman in the Window is a 1944 film noir directed by Fritz Lang that tells the story of psychology professor Richard Wanley (Edward G. Robinson) who meets and becomes enamored of a young femme fatale. Based on J. H. Wallis' novel Once Off Guard, the story features two surprise twists at the end. Director Fritz Lang substituted the film's dream ending in place of the originally scripted suicide ending, to conform with the moralistic Production Code of the time.
ROPE (1948), about two young men who decide to kill someone just to see what the act of murder is like, was basically an experiment for Hitch. It's done almost entirely in one continuous take. When he had to change film reels, he aimed the camera at a dark surface, such as the back of a man's dark suit, for a seamless switch.