Pretty good. The movie where the term 'gaslighting' comes from. Husband manipulates wife into thinking she is insane so he can steal her jewels. If there's a shortcoming, it's the characters. The bad guy has no motivation other than "I want these jewels". Ingrid Bergman plays a woman being driven to insanity splendidly, but she is a 'reactionary' main character throughout the whole thing, and it is all the other characters that move the plot forward. It's certainly tense, but it's frustrating to have an MC who does nothing until the very last scene. Otherwise, the movie gets it all right. Unrelated, but Ingrid Bergman smiles like sunrise after an ice storm.