Joe Masters
Joe Bonomo
Sally Warren, Chemist
Ruth Hiatt
Duke Worne
Helen Gibson
Paul Malvern
Crook
Al Baffert
J.P. McGowan
The Sphinx
Francis Ford
George Chesebro
Sheldon Lewis
Ernest Shields
Jack Richardson
Grace Cunard
Rosemary Theby
Peggy O'Day
Director
Writer