John Merton and Lane Bradford are father and son. They have appeared together in six movies.
Der Kampf um die Goldmine (1940), White Eagle (1941), Gentle Annie (1944), Flame of the West (1945), Shadows on the Range (1946), and this movie, Jack Armstrong (1947).
Jack Armstrong's car is the Thunderbowl Comet. The same car used in Speed (1936) starring Jimmy Stewart. Called the Falcon. Built by Harlan Fengler in the 1930s for the Metro film studio. Said to still exist today.
Chapter Titles:
1. Mystery of the Cosmic Ray
2. The Far World
3. Island of Deception
4. Into the Chasm
5. The Space Ship
6. Tunnels of Treachery
7. Cavern of Chance
8. The Secret Room
9. Human Targets
10. Battle of the Warriors
11. Cosmic Anihilator
12. The Grotto of Greed
13. Wheels of Fate
14. Journey Into Space
15. Retribution
Body count: 23