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In one of the most dangerous and intriguing cases of their careers, Frank and Joe Hardy help their father investigate a series of mysterious car accidents. Each of the drivers had seen a signpost marked DANGER shortly before his accident. The young detectives investigate, only to discover that the signposts have vanished. The attempted theft of a secret experimental motor and the kidnapping of a famous race horse are part of this thrilling case, which proves to be as sinister as the signposts themselves.
The price of "Hardy Boys 15: The Sinister Signpost (Hardcover Book)" at Up Up & Away! Cincinnati (Blue Ash) is USD $10.99.
The publisher of "Hardy Boys 15: The Sinister Signpost (Hardcover Book)" is Penguin Books.
The genres of "Hardy Boys 15: The Sinister Signpost (Hardcover Book)" are Juvenile Fiction - Action & Adventure - General, Juvenile Fiction - Family - Siblings, and Juvenile Fiction - Mysteries & Detective Stories.
"Hardy Boys 15: The Sinister Signpost (Hardcover Book)" falls under the category of Books (Hardcover).
The writer of "Hardy Boys 15: The Sinister Signpost (Hardcover Book)" is Franklin W. Dixon.
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