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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

A brilliant professor vanishes, leaving behind only a cryptic message scrawled on an exam paper. Just when the Hardy brothers, Frank and Joe, are about to hit a dead end, a new clue surfaces, pointing them toward the mysterious Honeycomb Cliffs. Danger and intrigue await them... 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

This is the original 1929 story of The Secret of the Caves: The Hardy Boys book 7. The book has undergone one major revision since originally published in 1929, resulting in two different stories bearing the same title.

While enjoying a summer day boating on Barmet... Read Full Overview

In this exciting installment, after rescuing a woman from drowning the Hardy boys find themselves helping their father in the hunt for her missing brother. Along with their chums, they encounter a number of colorful characters as well as natural impediments in their quest... Read Full Overview

This is the original 1929 story of The Secret of the Caves: The Hardy Boys book 7. The book has undergone one major revision since originally published in 1929, resulting in two different stories bearing the same title.

While enjoying a summer day boating on Barmet... Read Full Overview

Packed with suspense, action, and clever sleuthing, The Secret of the Caves is a classic Hardy Boys adventure perfect for young detectives and mystery lovers alike.

When the Hardy boys set out to investigate the strange disappearance... Read Full Overview

Packed with suspense, action, and clever sleuthing, The Secret of the Caves is a classic Hardy Boys adventure perfect for young detectives and mystery lovers alike.

When the Hardy boys set out to investigate the strange disappearance... Read Full Overview

A call for help. A vanishing professor. And a rugged coastline hiding a sinister secret... When Frank and Joe Hardy set out to help a friend in trouble, they never expect to be swept into a thrilling hunt for a missing man-and a string of mysterious events tied to the desolate... Read Full Overview

Step into a timeless world of adventure and intrigue with Franklin W. Dixon's classic juvenile mystery, "The secret of the caves." Join the iconic brother detectives, Frank and Joe Hardy, as they tackle a perplexing case that challenges their renowned skills.