Flying G Men

Flying GMen is a 15episode 1939 Columbia Film serial. It was the sixth of the 57 serials released by Columbia.

Bronson was killed when he attempted to stop enemy agents from stealing the new McKay military aircraft, designed by Billy McKay Sammy McKim. The Junior Air Defenders are also enlisted to help the Flying GMen. A plot to infiltrate all military factories and airports is discovered but the spy chief called The ProfessorForbes Murray is unknown. Suspecting Marvin Brewster, the owner of a local airport, is The Professor. The GMen find that he has kidnapped Babs McKay Lorna Gray, but they follow him to the spy hideout to capture Brewster and rescue Babs.Flying GMen had the services of noted aerial stunt pilot and cinematographer Paul Mantz who flew a Lockheed Sirius and Ryan ST. ........

Source: Wikipedia