On the surface, this is pretty much just De Palma remaking Psycho, but it's the way he decides to tell the story, where he tells the story, and who populates his story that make the film unique. Angie Dickinson's performance is remarkably understated and brilliant and is the heart of the film. Nancy Allen is just as great as the unapologetic prostitute who's comfortable in her skin and gets involved in a murder investigation after witnessing a murder and being named a suspect.