Joseph Henabery
Director
S.S. Van Dine
Writer
Edwin B. DuPar
Director of Photography
Burnet Hershey
Adaptation
Donald Meek
Dr. Crabtree
John Hamilton
Insp. Carr
Robert Middlemass
Boris Seminoff
Thelma Tipson
Dolly Demarest
Walter Fenner
Ian Stevens
Jane Bramley
Mae Norton
Frank McNellis
Monitor Man (uncredited)
Harry Tyler
Assistant Director (uncredited)
Herschel Mayall
Medical Examiner (uncredited)
