This article is written
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Edward Stratemeyer 002
The Hypersonic Secret
House name Franklin W. Dixon
Publication information
Publisher Minstrel Books[1]
Producer Mega-Books of New York[1]
Publication date December 1995[1]
Media type Paperback
ISBN ISBN 0671505181
Series The Hardy Boys
Preceded by Cross-Country Crime
Followed by The Cold Cash Caper


The Hypersonic Secret is the 135th book in The Hardy Boys series. It was first published in December 1995 by Minstrel Books (an imprint of Simon & Schuster).

Plot summary

Publisher's summary: Investigating the disappearance of an air taxi pilot, Frank and Joe uncover evidence of sabotage that points directly to the missing man's passenger, millionaire Ian Fairbanks, who is connected to a national conspiracy.[2]


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  1. 1.0 1.1 1.2 The Hardy Boys & Nancy Drew Archive

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