Flash, Dale and Dr. Zarkov travel 1500 miles beneath the Earth's surface to confront the ruler of a subterranean people who are intent on destroying those who live above ground.
After witnessing the destruction of five planets, Dr. Zarkov determines that the explosions were created by a nuclear bomb fueled by a material that takes hundreds of years to explode. Dale, Flash and the doctor journey back to 1950s Berlin to
Dale is sent to a prison world to repair the machinery used to create oxygen, without which not only the ruthless prisoners, but the warden and his guards would soon perish. Flaggert, the most notorious murderer in the galaxy manages to break o
The space patrol sends Flash's best friend to investigate a planet where it is reported that mercy is a crime and the weak are exploited. The agent is captured, brainwashed and sent back to murder Flash. Thanks to Dale's timely intervention, Fl
Dr. Zarkoff's request to test his new anti-gravitation device on a remote planet is denied because of the mysterious deaths of most of a recent scientific expedition that recently explored the world. The sole survivor's wild tale of an idol's c