The Lost City
(1935)
Directed by Harry Revier
William 'Stage' Boyd ... Zolok
Kane Richmond ... Bruce Gordon 
Claudia Dell ... Natcha Manyus 
Josef Swickard ... Dr. Manyus 
George 'Gabby' Hayes ... Butterfield
Billy Bletcher ... Gorzo
Eddie Fetherston ... Jerry Delaney 
Milburn Morante ... Chet Andrews
Sam Baker ... Hugo, lead giant 
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.
12 Chapters - 241 Minutes

Chapter Titles:
1. Living Dead Men
2. Tunnel of Death
3. Dagger Rock
4. Doomed!
5. Tiger Prey
6. Human Beasts
7. Spider Man
8. Human Targets
9. Jungle Vengeance
10.The Lion Pit
11.The Death Ray
12.The Mad Scientist

Racing to complete their serial before Mascot finished Phantom Empire (1935), producer Sherman Krellberg used three production units, thereby slicing production time from the scheduled 35 to 21 days.