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Triggered by the disappearance of a brilliant young professor, this mystery takes the Hardy boys first to Kenworthy College, where they find a puzzling message on an examination paper. But then, a new clue is unearthed that sends the young detectives to the Honeycomb Caves. After... Read Full Overview

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... Read Full Overview

When Frank and Joe try to help their father locate Miss Todd's missing brother, they find themselves tangled up with a mysterious hermit named Captain Royal.