- HD 1080
- Runtime: 55m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Lewis Seiler
- Stars: Ronald Reagan, Eddie Foy Jr., John Litel, Lya Lys, Frank Wilcox
- keywords: dirigible
- Production_studio: First National Pictures, Warner Bros. Pictures
- Slogan: A Battle Aboard a Doomed Dirigible!
- The Murder in the Air is featured in the top rankings of 1940
- #75 in Top Drama Movies of 1940
- #16 in Top Action Movies of 1940
- #22 in Top Thriller Movies of 1940
Enemy agents are everywhere and they are sabotaging all important war deliveries. The body of a hobo found in a train wreck had a money belt with $50,000 and a tattoo of a circle and arrow. This is a tattoo for saboteurs for hire and Brass must impersonate the dead man to find out what his orders are. As Steve Coe, he meets with the band of enemy agents in California and everything goes well until the wife of the dead 'Hobo' shows up. Luckily, Gabby is able to save Brass and Brass learns what is his assignment. He is to board the USN airship 'Mason', which is testing the super secret Inertia Projector, and destroy the airship.