William Powell
Role: Philo Vance
Mary Astor
Role: Hilda Lake
Eugene Pallette
Role: Detective Heath
Ralph Morgan
Role: Raymond Wrede
Robert McWade
Role: District Attorney Markham
Robert Barrat
Role: Archer Coe
Frank Conroy
Role: Brisbane Coe
Etienne Girardot
Role: Dr. Doremus
Paul Cavanagh
Role: Thomas MacDonald
Arthur Hohl
Role: Gamble the Butler
Helen Vinson
Role: Doris Delafield
Jack La Rue
Role: Eduardo Grassi
Harry Allen
Role: Sandy (uncredited)
Wade Boteler
Role: Desk Sergeant Mellish (uncredited)
Don Brodie
Role: Police Photographer (uncredited)
James Burke
Role: Policeman Who Lets Dog Out (uncredited)
George Chandler
Role: Reporter at Police Station (uncredited)
Spencer Charters
Role: Sergeant Snitkin (uncredited)
Virginia Dabney
Role: Girl (uncredited)
Milton Kibbee
Role: Reporter (uncredited)
Harry Morgan
Role: Gamble (uncredited)
Henry O'Neill
Role: Dubois (uncredited)
Paul Panzer
Role: Baggage Clerk (uncredited)
Cliff Saum
Role: Policeman on Night Patrol (uncredited)
Skippy
Role: Terrier at Dog Show (uncredited)
Arthur Thalasso
Role: Detective (uncredited)
Monte Vandergrift
Role: Detective (uncredited)
Leo White
Role: Chicago Hotel Clerk (uncredited)
Renee Whitney
Role: Telephone Operator (uncredited)
Charles C. Wilson
Role: Detective Hennessy (uncredited)