A robot similar to the one in this film was later used by Rob Zombie in his "Hellbilly Delux" album cover art.
Captain Bob West drives a 1939 Nash Ambassador convertible, while reporter Jean Drew drives a 1939 Nash Ambassador sedan.
Chapter Titles:
- 1. The Menacing Power
- 2. Death Stalks the Highways
- 3. Crashing Towers
- 4. Invisible Terror
- 5. Thundering Rails
- 6. The Iron Monster
- 7. The Menacing Mist
- 8. Trapped in the Flames
- 9. Speeding Doom
- 10. Phantom Footprints
- 11. The Blast
- 12. To Destroy the World
The explosion and avalanche footage from Universal's 1934 serial 'The Vanishing Shadow' (1934) is used in Chapter 11 of this serial as stock footage.
The last of Bela Lugosi's five serials, shot April 24-early June 1939, after Lugosi returned from England, where he completed "The Dark Eyes of London."
The scene in which Professor Zorka is lowered into a pit while wearing a protective suit is taken from the film _The Invisible Ray (1936)_ and it is actually Boris Karloff inside of the costume, not Bela Lugosi.
When Dr. Zorka drops the bomb on the dirigible, the stock footage is of the actual news footage of the explosion and crash of the Hindenburg.