Chapter 1, "The Black Ace" opens with dam-project foreman Hank Davis hiring two stunt flyers he once flew with, Fred Cromell and Bill "Jellybean" Cook, to protect the dam from the air raids by a group known as the Mystery Squadron, under the leadership of the mysterious Black Ace. Each attack is preceded by the arrival of a miniature airplane carrying a warning that the Mystery...
Don Phelan, the ace newsreel reporter falls in love with , Wilma Howell, the daughter of the owner of another newsreel company that is a bitter rival of the one Don Works for. The rivalry between the two companies, with cameramen nudging each other out of the way, sabotage acts by one against the other, and reporters fighting to get the 'scoop' does not bode well for the romanc...
Rich playboy Pike Winslow dons the mantle of 'The Reckoner', a mysterious avenger, when he learns that his lady friend Barbara Gerry's father has been framed in a bank embezzlement scandal. Using meticulous planning and split-second timing, Pike, along with his associates, the erudite 'Professor' and tough-guy scrapper 'Doc', attempt to find proof that will clear Gerry and iden...
Captain Orloff is sent to Bucharest to capture a Mata Hari type of spy, but many different women fit the bill and are attractive enough to make one question one's allegiance.
