Philo Vance investigates when a murderer preys upon members of a wealthy family on New York's Upper East Side.
Philo Vance
Sibella Greene
Dr. Von Blon
Ada Greene
Sergeant Heath
John F. X. Markham
Mrs. Tobias Greene
Chester Greene
Rex Greene
Sproot
Mrs. Mannheim
Hemming
Nurse (uncredited)
Medical Examiner (uncredited)
Lawyer Canon (uncredited)
Miss O'Brien (uncredited)
Barton (uncredited)
Policeman (uncredited)
