The Trail of the Octopus

Ben F. Wilson

Carter Holmes

Neva Gerber

Ruth Stanhope

William Dyer

Sandy MacNab

Howard Crampton

Dr. Reid Stanhope

William A. Carroll

Omar

Marie Pavis

Mlle. Zora Ruharde

Al Ernest Garcia

Wang

Harry Archer

Raoul Bornay

C.M. Williams

Aboul Shabistari

John George

Borno - The Ape Man