Philo Vance
Bernice Stamm
Gale Leland
Sgt. Ernest Heath
Mother Stamm
District Attorney Markham
Rudolph Stamm
Ruby Steele
Ken Tatum
Dr. Doremus - Coroner
Monty Montague
Dr. Halliday
Greeff
Trainor - Stamm's Butler
Det. Hennessey
Det. Burke (uncredited)
Service Station Attendant (uncredited)
Police Sergeant (uncredited)
Currey - Vance's Butler (uncredited)
Commander (uncredited)
Detective (uncredited)
Steam Room Attendant (uncredited)
