# The secret of the caves

By Franklin W. Dixon.

"The Secret of the Caves" by Franklin W. Dixon is a mystery novel written in 1929. When teenager Morgan Todd disappears, Frank and Joe Hardy team up with their detective father to find him while protecting a coastal radar station from sabotage. Their investigation leads them to mysterious Honeycomb Caves, where strange lights flicker and gunshots echo. As the brothers and their friends camp near the caves, they encounter a hostile hermit, unexplained explosions, and arson. The young detectives must unravel the connection between the missing man and sinister activities threatening national security. (Summary by Project Gutenberg, written by machine.)

- Language: English
- Illustrator: Walter S. Rogers
- Subjects: Brothers -- Juvenile fiction; Missing persons -- Juvenile fiction; Mystery and detective stories; Hardy Boys (Fictitious characters) -- Juvenile fiction

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From Project Gutenberg. Public domain in the United States.