Kadro (17)
Glen GordonDr. Fu Manchu
Lester MatthewsSir Denis Nayland Smith
Laurette LuezKaramaneh
Clark HowatDr. John Petrie
Carla BalendaBetty Leonard
John GeorgeKolb
John Carradine
Steven GerayOtto Helgaard
Cedric Hardwicke
Victor Sen YungBroadcaster (uncredited)
Leonard StrongProfessor Hugh Yan
Keye LukeLum Sen
Morris AnkrumProfessor Rutledge
Keith RichardsLoder (uncredited)
Peter MamakosCarsten
Hugh SandersCapt. Warren
Suzanne RidgwaySaloon Girl (uncredited)