Smilin' Jack #1

Smilin' Jack, a pilot, becomes entangled in a conflict involving oil field development and sabotage. A boss-man character has docked Jack's pay and accused him of loafing, while Jack discovers a plot involving revolutionaries and spies who aim to destroy the oil company's pipeline and aircraft to hinder American oil development. Jack and his allies work to stop the saboteurs' plans, which include orchestrating fatal mishaps and raids on the company's bases. The story culminates in schemes to eliminate Jack through various means, including poisoning and staged accidents, as the villains attempt to prevent him from interfering with their revolutionary operations.