The Secret of the Caves

The Secret of the Caves
Original edition
AuthorFranklin W. Dixon
LanguageEnglish
SeriesThe Hardy Boys
GenreDetective, mystery
PublisherGrosset & Dunlap
Publication date
May 1, 1929 (original edition)
1965 (revised edition)
Publication placeUnited States
Media typePrint (hardback & paperback)
Pages210 (original edition)
175 (revised edition)
Preceded byThe Shore Road Mystery 
Followed byThe Mystery of Cabin Island 

The Secret of the Caves is Volume 7 in the original Hardy Boys series of mystery books for children and teens published by Grosset & Dunlap.

This book was written by Leslie McFarlane in 1929 for the Stratemeyer Syndicate, which published it under the pseudonym Franklin W. Dixon. Between 1959 and 1973 the first 38 volumes of this series were systematically revised as part of a project directed by Edward Stratemeyer's daughter Harriet Adams. In 1965, the original version of this book was rewritten by Andrew E. Svenson, resulting in two different stories with the same title.