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.
Directed by: Ford Beebe, Ray Taylor
Cast: Buster Crabbe, Carol Hughes, Charles Middleton, Anne Gwynne, Frank Shannon, John Hamilton, Herbert Rawlinson, Tom Chatterton, Shirley Deane, Lee Powell, Roland Drew, Don Rowan
Genres: Action, Adventure, Sci-Fi, Superhero
Rating: 6.2/10