1935. Directed by Harry Revier. TAGLINES : "High-Voltage Action! Electrifying Thrills! Thunderbolt Drama!" "Explore the forbidden secrets!" Chapter 1-- "Living Dead Men." - An evil scientist plots to take over the world from his base in Africa, where he has invented a machine that can cause earthquakes. After a series of electrical storms disrupts the world, electrical engineer Bruce Gordon develops a machine to trace the cause of the disasters. He discovers that the source is in central Africa and, backed by the nations of the world, sets out on an expedition. Bruce learns that the disturbances emanate from an area called the Magnetic Mountain. But unknown to our hero and his pal Jerry, the Magnetic Mountain also contains a super-advanced secret city ruled by the tyrannical scientific wizard named Zolok, who has unleashed the electrical fury threatening civilization as part of his plan to conquer the world. Zolok has under his control a brilliant inventor, Manyus, Manyus' beautiful daughter Natcha and an army of giant African slaves, who follow the dictates of a strongman, Appolyn, and Gorza, a dwarf. Also in the mix are schemers Reynolds and Colton, who plan to capture Manyus and thereby gain control of Zolok's army, and a double-crossing fellow explorer named Butterfield. Can Bruce evade Zolok's "destroying rays" and stop his dreams of world conquest? CHAPTER TITLES: 1. Living Dead-Men; 2. The Tunnel of Flame; 3. Dagger Rock; 4. Doomed!; 5. Tiger Prey; 6. Human Beasts; 7. Spider Men; 8. Human Targets; 9. Jungle Vengeance; 10. The Lion Pit; 11. The Death Ray; 12. The Mad Scientist. CAST includes William "STAGE" Boyd, Kane Richmond, George 'Gabby' Hayes, Claudia Dell, Josef Swickard, Billy Bletcher, Eddie Fetherston, Milburn Morante, Margot D'Use, Jerry Frank, Ralph Lewis, Sam Baker. BEHIND THE SCENES TRIVIA : William 'Stage' Boyd was either drunk or on drugs during the filming of the final chapter, and it shows. His bad behavior on and off camera got him in so much trouble that it wrecked his career. Fellow actors in this movie didn't want to be around him when he was inebriated; this may be why he is shown alone in his final scenes. Many referred to him as a "functioning drunk". He passed away shortly after this movie was released from problems caused by his excessive drinking. A judge ordered him to add the "Stage" to his name so he wouldn't be confused with the other William Boyd, who played Hopalong Cassidy and whose career was being adversely affected by "Stage" Boyd's bad behavior.