01108 a2200241 4500 118602 9780448089157 enc. eng [Fic] The Hardy boys mystery stories The sinister signpost The Hardy boys mystery stories 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. Mystery - Fiction 000031/00003159.jpg BR-BrIDEA BR-BrIDEA Year 4 [Fic] HAR New York Grosset & Dunlap 1996 180 p. ill. Dixon, Franklin W. author BK 0 0 ddc 0 0 12.28 12.28 2022-07-28 0 Year 4 [Fic] HAR 00058943SSW 2024-01-23 15:01:38 2024-01-23 BK 118602 118602