Hardy Boys #15 (matte)

Sinister Sign Post

by Franklin W. Dixon
Publisher: Grosset & Dunlap
©1936, Item: 76480
Hardcover, 192 pages
Used Price: $4.50 (1 in stock) Condition Policy

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.

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