#2 The House on the Cliff: When Mr. Hardy disappears while investigating a mystery surrounding a vacant house rumored to be either haunted or a hideout for criminals, the Hardy Boys search for the truth.
#37 The Ghost at Skeleton Rock: The Hardy Boys travel to Puerto Rico to investigate the mystery behind a secret coded letter that they received from their father.
#58 The Sting of the Scorpion: Frank and Joe witness an explosion in the sky near an airborne dirigible owned by Quinn Air Fleet. Facing danger from all sides, the boys decide to investigate the mysterious explosion.
About the Author
Franklin W. Dixon is a pen name used by a variety of authors writing for the classic series, The Hardy Boys. The first and most well-known "Franklin W. Dixon" was Leslie McFarlane, a Canadian author who contributed 19 of the first 25 books in the series. Other writers who have adopted the pseudonym include Christopher Lampton, John Button, Amy McFarlane, and Harriet Stratemeyer Adams.