Don't Bother To Knock is a minor thriller but one noteworthy for a performance from Marilyn Monroe that proves she was more than a pretty face and a memorable screen presence. Her performance is fantastic. She handles the shades and subtleties of her character with ease -- so comfortably, in fact, that the performance doesn't draw attention to itself. The story doesn't either, but for entirely the wrong reason: it's a forgettable trifle about a disturbed babysitter left to take care of a child in a hotel room for an evening. It's entertaining once, but Monroe is the movie's only indispensible asset.