The Sinister Sign Post (later retitled The Sinister Signpost ) Volume 15 in the original The Hardy Boys book series published by Grosset & Dunlap.
Racing cars, mystery, and adventure are the elements combined to give Frank and Joe Hardy one of the most dangerous and intriguing cases of their careers.
It starts when their father, Fenton Hardy, is engaged by an experimental race car and motor designer to investigate a series of mysterious accident...
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The Sinister Sign Post (later retitled The Sinister Signpost ) Volume 15 in the original The Hardy Boys book series published by Grosset & Dunlap.
Racing cars, mystery, and adventure are the elements combined to give Frank and Joe Hardy one of the most dangerous and intriguing cases of their careers.
It starts when their father, Fenton Hardy, is engaged by an experimental race car and motor designer to investigate a series of mysterious accidents. Three of his drivers have crashed because of the windshields of their cars were suddenly crazed, thus cutting off forward view. Frank and Joe discover one slim clue. Each of the drivers had seen a signpost marked danger right before the accident. The young detectives investigate, only to discover the signposts have vanished.
There is also an attempted theft of a secret experimental motor and a kidnapping of a famous race horse are part of this case, which proves to be as sinister as the signposts themselves.
The 15th book in the series out...
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