TY  - BOOK
AU  - Dixon, Franklin W. 
AU  - Franklin W. Dixon 
TI  - the hard boys mystery stories 15: : the sinister signpost 
U1  - Fic. D621s 2008  
PY  - 1936///
CY  - New York 
PB  - Grosset & Dunlap, Inc. 
N2  - In The Sinister Signpost (Book 15), Frank and Joe Hardy investigate a series of staged car crashes targeting an automotive company. Drivers reported seeing "DANGER" signs just before their windshields mysteriously "crazed" (cracked). The brothers uncover a plot involving stolen, secret engine plans, a kidnapped racehorse, and a villain named Vilnoff.
ER  -