Continuity mistake: When the kid is playing his violin in the train station, his case at first (shot from a high angle) is about three feet away from him and then when the shot is close the case is right next to him.
Tom Wingo: Let's face it, Lowenstein. Women are more devious than men. You're great at hiding things. You keep secrets. You smile when you lie. You expect a man to be a tower of strength. When he's got a few weaknesses and insecurities, what do you do? You turn around, and goddamn it, you betray him.