AllMovie

Sally Blane (Loretta Young's look-alike sister) plays Janet, a Manhattan socialite who is fed up with the superficiality of her friends. Sensing that Janet is bored with life in general, her Uncle George (J. Farrell McDonald), who happens to be a judge, decides to show the girl how well off she really is. He invites her to sit in on a session of Night Court, so that she may see how many unfortunates there are in the world. One of the defendants brought up before Uncle George is handsome young Nick (John Darrow), arrested for pummeling a man who'd propositioned Nick's sister (played by a 16-year-old Betty Grable). Paroled in Janet's custody, Nick is hired as the girl's chauffeur -- and guess where all this is leading. Minus the romantic angle, Probation was partially remade as the East Side Kids comedy Mr. Muggs Steps Out.