Hardy Boys 15: The Sinister Signpost

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.

Binding Type: Hardcover
Publisher: Grosset & Dunlap
Published: 09/01/1936
ISBN: 9780448089157
Pages: 192
Weight: 0.51lbs
Size: 7.56h x 5.07w x 0.72d
Accelerated Reader Quiz #/Name: 5693 / Sinister Signpost
Reading Level: 5.1 / Interest Level: Middle Grade / Point Value: 5