출연진
Henry Brandon
Dr. Fu Man Chu
William Royle
Sir Dennis Nayland Smith
Robert Kellard
Allan Parker
Luana Walters
Mary Randolph
Olaf Hytten
Dr. Petrie
Tom Chatterton
Prof. Randolph
Gloria Franklin
Fah-Lo-Suee
John Merton
Loki
George Cleveland
Dr. James Parker
John Dilson
Prof. Ezra Howard
Dwight Frye
Prof. Anderson
Wheaton Chambers
Dr. Humphrey
George Pembroke
C.W. Crawford
Lal Chand Mehra
Sirdar Prahni
Guy D'Ennery
Ranah Sang
Lowden Adams
Blake, Randolph's Assistant
Philip Ahn
Dr. Chang
John Bagni
Dangra - Spy at Fort
Ann Baldwin
Miss Frisbie - Winchester's Secretary
Robert Blair
Police Sergeant at Randolph's
George Bruggeman
Fort Telegrapher