Description
| Author/Contributor(s): | Dixon, Franklin W. |
| Publisher: | Grosset & Dunlap |
| Date: | 5/1/1929 |
| Binding: | Hardcover |
| Condition: | NEW |
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 many dangerous encounters, Frank and Joe discover a powerful searchlight in one of the craggy caverns along the seacoast. In the brilliant white glare of the searchlight, the startling secret of the caves is dramatically revealed.
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