Richard H. Digges Jr.

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.

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.

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