
Written by Franklin W. Dixon
Book #16 in the The Hardy Boys series
A cryptic warning leads two detectives into a deadly mystery.
Frank and Joe Hardy face their most perplexing case yet after a blind peddler's warning and a mysterious glass eye. Their investigation leads them to a fortified estate, where a terrified businessman hides from an unknown threat. As they delve deeper, the brothers find themselves ensnared in a house filled with secrets and danger, with no clear way out. Can they unravel the mystery before it's too late?
A blind peddler’s warning and a weird glass eye plunge Frank and Joe Hardy into one of the most baffling cases they have ever tackled. The young detectives’ investigation takes them to a walled estate guarded by savage dogs, where a wealthy businessman is hiding out in fear for his life. In a climax that will hold the reader spellbound with suspense, Frank and Joe find themselves trapped in a sinister house of mystery where there seems to be no escape!
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