Marion Crane does steal $40,000, but still she fits the Hitchcock mold of an innocent to crime.
The setup involves a theme that Hitchcock used again and again: The guilt of the ordinary person trapped in a criminal situation. Marion Crane does steal $40,000, but still she fits the Hitchcock mold of an innocent to crime. We see her first during an afternoon in a shabby hotel room with her divorced lover, Sam Loomis ( John Gavin). He cannot marry her because of his alimony payments; they must meet in secret. When the money appears, it’s attached to a slimy real estate customer (Frank Albertson) who insinuates that for money like that, Marion might be for sale. So Marion’s motive is love, and her victim is a creep.