Richard H. Digges Jr.

Philo Vance investigates when a murderer preys upon members of a wealthy family on New York's Upper East Side.

A vaudeville magician team is broken up when Carlee, an ex--circus performer, becomes infatuated with socialite Hilda Schmittlap. Meanwhile his vaudeville partner, Claire, has chosen a new partner, but her "heart isn't in it" because she is disconsolate over Carlee. Curious about her new act, Carlee attends a performance and sees Claire nearly killed when she fails to substitute fake bullets for real ones. Rushing to her aid, Carlee realizes how much Claire means to him.

Racecar-driver Lou Larrigan gets mixed up with a crooked gang of racetrack promoters, and is in love with Ruth Morgan, whose father is marked as a victim by the gang.