The Airmail Mystery
A pilot and a gold mine owner go up against the evil Black Hawk, who has invented a plane that can take off and land without using a runway.
- Sjanger: Adventure
- Ettromsleilighet: Universal Pictures
- Nøkkelord: movie serial
- Cast: James Flavin, Lucile Browne, Wheeler Oakman, Frank Hagney, Sidney Bracey, Nelson McDowell
