Flash Gordon's Trip to Mars Ep 08 The Black Sapphire of Kalu 1938 Serial

Flash Gordon's Trip to Mars Ep 08 The Black Sapphire of Kalu 1938 Serial. Starring Buster Crabbe as Flash Gordon, Jean Rogers as Dale Arden, Frank Shannon as Dr. Alexis Zarkov, Charles B. Middleton as Ming the Merciless, and Richard Alexander as Prince Barin. Also in the principal cast are Beatrice Roberts as Queen Azura, Donald Kerr as Happy Hapgood, Montague Shaw as the Clay King, and Wheeler Oakman as Ming's chief henchman.