The Mystery of the Flying Express
 | |
| Author | Franklin W. Dixon |
|---|---|
| Series | The Hardy Boys |
| Genre | Children's literature |
| Publisher | Grosset And Dunlap |
Publication date | January 1, 1941 |
| Pages | 192 |
| ISBN | ISBN 0448089203 Parameter error in {{ISBNT}}: invalid character |
| Preceded by | The Disappearing Floor |
| Followed by | The Clue of the Broken Blade |
The Mystery Of The Flying Express is Volume 20 in the original Hardy Boys book series published by Grosset And Dunlap. Template:Spoiler After the new hydrofoil they are guarding, the Flying Express, is stolen, the Hardy Boys face frequent danger in solving a mystery involving criminals who operate by signs of the zodiac.
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