The Masked Monkey Franklin W. Dixon Hardy and similar items

The Masked Monkey Franklin W. Dixon Hardy Boys Mystery The Masked Monkey Franklin W. Dixon New York: Grosset and Dunlap ISBN: 9780448089515 Copyright 1972 Black and white illustrations The Hardy Boys No. 51 178 pages The binding is in good condition and the pages are clean. The cover is lightly scuffed and shows wear at the corners and spine ends. The top edge has a small nick and there is a light stain on the bottom front. Good. Hardcover. Frank and Joe Hardy are called upon to find a wealthy industrialist's son who has mysteriously disappeared. Did Graham Retson flee from his home because he was at odds with his father, or was he kidnapped? Finding the answer turns into something more dangerous and larger in scope than Frank and Joe ever bargained for. The only clue in the case leads the two young detectives to South America, where the intrigues of evil adversaries almost cost them their lives. Involved in this complex mystery are a fierce-looking monkey trained to be a killer, a school of voracious, man-eating piranhas, a ruthless gang of passport thieves, and a cleverly operated change-your-identity mill for criminals. Only through their courage and perseverance do the Hardys solve one of the toughest cases they have ever tackled.