num_pages: 177
description: After the new hydrofoil they are guarding is stolen, the Hardy boys face frequent danger in solving a mystery involving criminals who operate by signs of the zodiac.
language: English
title: Mystery of the Flying Express
titlecomplete: Mystery of the Flying Express (The Hardy Boys, #20)
genres: Middle Grade, Detective, Childrens, Juvenile, Young Adult, Classics, Mystery, Mystery Thriller, Adventure, Fiction
ratings_count: 1916
series: The Hardy Boys
publisher: Grosset & Dunlap