Flash Gordon, Dale Arden and Dr. Alexis Zarkov visit the planet Mongo to thwart the evil schemes of Emperor Ming the Merciless, who has set his planet on a collision course with Earth.
Directed By
Frederick Stephani, Ray TaylorWritten By
Alex Raymond, Frederick Stephani, Studio
Hearst Entertainment Productions, Universal Pictures, King Features SyndicateCast of Spaceship to the Unknown