The Hardy Boys series, first published in 1927, has sold more than 70 million copies!
Now with a brand-new look, this is an edition that collectors won't want to miss! In The Secret of the Caves , the seventh book in the incredibly popular, long-running series, Frank and Joe Hardy discover the secret of the Honeycomb Caves while searching for a missing professor. A special treat for Hardy Boys fans and any reader who's new to the series!
This is Book 7 in the The Hardy boys Series. See all The Hardy boys books here.
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Franklin W. Dixon is the author of the ever-popular Hardy Boys books.
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