Marnie is the character study of a thief and a liar, but what makes her tick remains clouded even after a climax reckoned to be shocking but somewhat missing its point.
Hitchcock was criticised for bring shallow psychology into the film (Hedren's character is afraid of the colour red) but some of their exchanges - the film was based on a novel by Winston Graham - are sharp and droll.
Unfortunately, Marnie was released right after the masterpiece The Birds and comparisons were inevitable, but there's so much to admire about this work, textually, dramatically, visually.