The Great Airport Mystery

The original 1930 story of The Great Airport Mystery, the ninth book in The Hardy Boys series, follows Frank and Joe Hardy as they become entangled in a daring airline adventure involving mistaken blame, criminal plots, and a major mail robbery. After a near-accident with an airmail pilot, the boys are framed by criminals who buy a plane to commit a heist, prompting the Hardy Boys to go undercover on the aircraft and help foil the criminals' plans. Their efforts lead to the capture of the real culprits and the resolution of a high-stakes theft, showcasing the innocence and warmth of early 20th-century adventure stories.