Hardy Boys: #15 The Sinister Signpost

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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.

Censor Level:
Format: Default Title
Genre: Fiction
Guided Reading Level: R
Series: Hardy Boys
ISBN-13: 9780448089157
ISBN-10: 0-44-808915-7
Sub Genre: Mystery

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