Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Flash Gordon''s Trip to Mars is a 1938 serial film of 15 episodes, based on the comic strip Flash Gordon. It is the second of three Flash Gordon serials made between 1936 and 1940. The main cast from first serial reprise their roles: Buster Crabbe as Flash Gordon, Jean Rogers as Dale Arden, Frank Shannon as Dr. Alexis Zarkov and Charles B. Middleton as Ming the Merciless. Also in the principal cast are Beatrice Roberts as Queen Azura, Donald Kerr as Happy Hapgood, C. Montague Shaw as the Clay King, and Wheeler Oakman as Ming''s chief henchman.