William Powell

• Philo Vance

William 'Stage' Boyd

• Harry Gray

Eugene Pallette

• Sgt. Edward Heath

Paul Lukas

• Adolph Mohler

Natalie Moorhead

• Fanny Del Roy

Richard Tucker

• Anthony Benson

May Beatty

• Mrs. Paula Banning

E.H. Calvert

• DA John F.X. Markham

Mischa Auer

• Albert Brecker (uncredited)

Perry Ivins

• Print Dealer (uncredited)

Charles McMurphy

• Detective Burke (uncredited)

Guy Oliver

• Captain Hagedorn (uncredited)

Dick Rush

• Detective Welch (uncredited)

Otto Yamaoka

• Sam (uncredited)

Frank Tuttle

Archie Stout

Doris Drought

Travis Banton

S.S. Van Dine

Eugene Richee

Bartlett Cormack

Fred A. Datig

Harold M. McNiff

Dick Stockton

Charles Midgely

Jesse L. Lasky

B.P. Schulberg

Adolph Zukor