An action-packed 1928 Silent 10 Chapter serial remastered in Hi-Definition from the only surviving 35mm tinted print. An inventor adds new innovations to an air company’s planes, prompting the owners of a rival company to set out to steal them. The stakes are sky-high as an airman and an aviatrix find themselves in constant peril, both on earth and above the clouds. Written by famed mystery novelist Arthur B. Reeve. Bonus Features: •  Full-length commentary track by noted film historian and author, Richard M Roberts •  Short Subject:  “Flying Cadets” (1928) •  New York Censor Board File •  Original Lobby Cards and Posters