Calificación
Reparto

William Powell
Philo Vance

Florence Eldridge
Sibella Greene

Ullrich Haupt
Dr. Von Blon

Jean Arthur
Ada Greene

Eugene Pallette
Sergeant Heath

E.H. Calvert
John F. X. Markham

Gertrude Norman
Mrs. Tobias Greene

Lowell Drew
Chester Greene

Morgan Farley
Rex Greene

Brandon Hurst
Sproot

Augusta Burmeister
Mrs. Mannheim

Marcia Harris
Hemming

Veda Buckland
Nurse (uncredited)

Shep Camp
Medical Examiner (uncredited)

Charles E. Evans
Lawyer Canon (uncredited)

Helena Phillips Evans
Miss O'Brien (uncredited)