William Powell
Philo Vance
Mary Astor
Hilda Lake
Eugene Pallette
Detective Heath
Ralph Morgan
Raymond Wrede
Robert McWade
District Attorney Markham
Robert Barrat
Archer Coe
Frank Conroy
Brisbane Coe
Etienne Girardot
Dr. Doremus
James Lee
Liang
Paul Cavanagh
Thomas MacDonald
Arthur Hohl
Gamble the Butler
Helen Vinson
Doris Delafield
Jack La Rue
Eduardo Grassi
Harry Allen
Sandy (uncredited)
Wade Boteler
Desk Sergeant Mellish (uncredited)
Don Brodie
Police Photographer (uncredited)
James Burke
Policeman Who Lets Dog Out (uncredited)
George Chandler
Reporter at Police Station (uncredited)
Spencer Charters
Sergeant Snitkin (uncredited)
Virginia Dabney
Girl (uncredited)
Milton Kibbee
Reporter (uncredited)
Harry Morgan
Gamble (uncredited)
Henry O'Neill
Dubois (uncredited)
Paul Panzer
Baggage Clerk (uncredited)
Cliff Saum
Policeman on Night Patrol (uncredited)
Skippy
Terrier at Dog Show (uncredited)
Arthur Thalasso
Detective (uncredited)
Monte Vandergrift
Detective (uncredited)
Leo White
Chicago Hotel Clerk (uncredited)
Renee Whitney
Telephone Operator (uncredited)
Charles C. Wilson
Detective Hennessy (uncredited)
Robert N. Lee
Screenplay
S.S. Van Dine
Writer
Robert Presnell Sr.
Adaptation
Michael Curtiz
Director
Peter Milne
Screenplay
William Rees
Director of Photography
Maxwell Arnow
Casting Director
Harold McLernon
Editor
Jack Okey
Art Direction
William C. McGann
Assistant Director
Charles Althouse
Sound
Bernhard Kaun
Original Music Composer
William Maybery
Casting Assistant
Orry-Kelly
Costume Design
Owen Crompton
Grip
Lawrence Kennedy
Electrician
Al Alleborn
Unit Manager
Kurt Rayfeld
Second Assistant Director
Ray Heindorf
Orchestrator
William P. Whitley
Assistant Camera
Russel Trost
Casting Associate
John Ellis
Still Photographer
Herbert Plews
Props
Leo F. Forbstein
Conductor