then against a vicious orangopoid. "Fighting the Fire Dragon" Flash survives the tournament with Aura's help, after she discovers the weak point of the orangopoid. Still determined to win Flash, Aura has him drugged to make him lose his memory. "The Unseen Peril" Flash recovers his memory. Ming is determined to have Flash executed. "In the Claws of the Tigron" Zarkov invents a machine that makes Flash invisible. Flash torments Ming and his guards. Barin hides Dale in the catacombs, but Aura has her tracked by a tigron. "Trapped in the Turret" Aura realizes the error of her ways, and falls in love with Barin. She tries to help Flash and his friends to return to Earth — but Ming plots to kill them. "Rocketing to Earth" Ming orders that the Earth people be caught and killed, but Flash and his friends escape from the Emperor's clutches, and Ming is apparently killed in the flames of the "sacred temple of the Great God Tao". Flash, Dale and Zarkov make a triumphant return to Earth. Cast Buster Crabbe as Flash Gordon Charles B. Middleton as Ming the Merciless Jean Rogers as Dale Arden Priscilla Lawson as Princess Aura Frank Shannon as Dr. Alexis Zarkov Richard Alexander as Prince Barin Jack Lipson as King Vultan Theodore Lorch as Second High Priest James Pierce as Prince Thun Duke York as King Kala Earl Askam as Officer Torch Lon Poff as First High Priest (uncredited) Richard Tucker as Professor Gordon George Cleveland as Professor Hensley Muriel Goodspeed as Zona Cast notes: Eddie Parker served as a stand-in and stunt double for Buster Crabbe. Crash Corrigan, who would later star in other serials, wore a modified gorilla suit to portray the "orangopoid" seen in chapters 8 and 9. Glenn Strange in uncredited roles wore the "Gocko" lobster-clawed dragon costume and also appears as one of Ming's soldiers. Richard Alexander helped to design his own costume, which included a leather chest plate painted gold. Early film fan historians claimed that actor Lon Poff, playing the first of Ming's two high priests, died shortly after production began and was replaced by Theodore Lorch. In fact, however, only Poff's character died, or rather was killed by Ming in an act of fury and replaced by Lorch's High Priest, but the scene was cut from the final print. Poff did not die until 1952. Production According to Harmon and