This was the last space-themed serial ever made.
Chapter titles:
1. Mystery of the Guided Missile
2. Trapped by the Axial Propeller
3. Blasted by the Thermic Disintegrator
4. The Mind Control Machine
5. The Atomic Plane
6. Disaster in the Stratosphere
7. Snared by the Prysmic Catapult
8. Astray in Space
9. The Hypnotic Ray Machine
10. To Free the Planet People
11. Dr. Grood Defies Gravity
12. Trapped in a Cosmo Jet
13. The Invisible Enemy
14. In the Grip of the De-Thermo Ray
15. Sentenced to Space