Directed by Ford Beebe, Ray Taylor | Starring: Buster Crabbe, Charles Middleton, John Hamilton, Carol Hughes

A mysterious plague, the Purple Death, ravages the earth. Dr. Zarkov, investigating in his spaceship, finds a ship from planet Mongo seeding the atmosphere with dust. Sure enough, Ming the Merciless is up to his old tricks. So it's back to Mongo for Flash, Dale, and Zarkov.

Flash Gordon Conquers the Universe - Lobby card with Carol Hughes, Buster Crabbe, Frank Shannon, Roland Drew, Anne Gwynne & Charles Middleton

More stills and photos from Flash Gordon Conquers the Universe