Cast
Ned Sparks
Tony Skeel
Oscar Smith
Stuttering Hallboy (uncredited)
William Powell
Philo Vance
James Hall
Jimmie Spottswoode
Charles Lane
Charles Spottswoode
Gustav von Seyffertitz
Dr. Ambrose Lindquist
E.H. Calvert
District Attorney Markham (as Captain E. H. Calvert)
Eugene Pallette
Sergeant Heath
Louis John Bartels
Louis Mannix
Margaret Livingston
Body Double for Louise Brooks (uncredited)
Louise Brooks
The Canary
Jean Arthur
Alice LaFosse
Lawrence Grant
John Cleaver