E. Alyn Warren

as Professor (uncredited)

as Carlisle P. Buxton

as Préfect of Police

as Dr. Trevissant

as Phillip Tsang

as Dr. Brooks

as Goy Lo Sung - Fu Manchu Messenger (uncredited)

as Soo Lat the Cobbler

as Lu Chung

as Stephen A. Douglas / General Grant

as Emil Goltz

as Train Engineer

as Baruch Koweski / Jethro Koweski

as Prosecuting Attorney

as Chang Lo