Philo Vance

William Powell

Sibella Greene

Florence Eldridge

Mrs. Gertrude Mannheim

Augusta Burmeister

Hemmings

Marcia Harris

Nurse (Uncredited)

Veda Buckland

Medical Examiner (Uncredited)

Shep Camp

Lawyer Canon (Uncredited)

Charles E. Evans

Miss O'Brien (Uncredited)

Helena Phillips Evans

Barton (Uncredited)

Mildred Golden

Cop in House (Uncredited)

Harry Strang

Ada Greene

Jean Arthur

Sergeant Ernest Heath

Eugene Pallette

District Attorney John F. X. Markham

E.H. Calvert

Dr. Arthur Von Blon

Ullrich Haupt

Mrs. Tobias Greene

Gertrude Norman

Chester Greene

Lowell Drew

Rex Greene

Morgan Farley

Sproot

Brandon Hurst

Screenplay

Louise Long

Director

Frank Tuttle

Costume Design

Travis Banton

Novel

S.S. Van Dine

Director of Photography

Henry W. Gerrard

Editor

Verna Willis

Dialogue

Bartlett Cormack

Producer

B.P. Schulberg

Original Music Composer

Karl Hajos

Casting

Fred A. Datig

Casting Assistant

Dick Stockton