Philo Vance
Hilda Lake
Detective Heath
Raymond Wrede
District Attorney Markham
Archer Coe
Brisbane Coe
Dr. Doremus
Liang
Thomas MacDonald
Gamble the Butler
Doris Delafield
Eduardo Grassi
Sandy (uncredited)
Desk Sergeant Mellish (uncredited)
Police Photographer (uncredited)
Policeman Who Lets Dog Out (uncredited)
Reporter at Police Station (uncredited)
Sergeant Snitkin (uncredited)
Girl (uncredited)
Reporter (uncredited)
Gamble (uncredited)
Dubois (uncredited)
Baggage Clerk (uncredited)
Policeman on Night Patrol (uncredited)
Terrier at Dog Show (uncredited)
Detective (uncredited)
Detective (uncredited)
Chicago Hotel Clerk (uncredited)
Telephone Operator (uncredited)
Detective Hennessy (uncredited)