Carter Holmes, master criminologist, must help the oft-kidnapped Ruth Stanhope to find the 9 daggers that will unlock the secret of the cursed Devil's Trademark!
Ben F. Wilson
as Carter Holmes
Neva Gerber
as Ruth Stanhope
William Dyer
as Sandy MacNab
Howard Crampton
as Dr. Reid Stanhope
William A. Carroll
as Omar
Marie Pavis
as Mlle. Zora Ruharde
Al Ernest Garcia
as Wang
Harry Archer
as Raoul Bornay
C.M. Williams
as Aboul Shabistari
John George
as Borno - The Ape Man
Charles King
as Henchman
