# Hardy Boys 51: the Masked Monkey

Canonical: https://www.bookquiver.com/laura-lee-hope/hardy-boys-51-the-masked-monkey/9780448089515

![Hardy Boys 51: the Masked Monkey](https://quivercdn.com/covers/grosset-dunlap/laura-lee-hope/hardy-boys-51-the-masked-monkey_978-04-4808-951-5.jpg?v=2026-06-23%2018%3A11%3A06)

- Book: [Hardy Boys 51: the Masked Monkey](https://www.bookquiver.com/laura-lee-hope/hardy-boys-51-the-masked-monkey) ([Hardy Boys 51: the Masked Monkey.md](https://www.bookquiver.com/laura-lee-hope/hardy-boys-51-the-masked-monkey.md))
- Authors: [Laura Lee Hope](https://www.bookquiver.com/laura-lee-hope)
- Publisher: grosset_dunlap
- ISBN: 978-04-4808-951-5
- Pages: 192
- Published: 1972-01-01
- Language: en_US
- Binding: Hardcover

## Description

Frank and Joe are called upon to find a wealthy industrialist’s son who has mysteriously disappeared. The only clue in the case leads the two young detectives to South America, where the intrigues...