Keene, Carolyn <br/><br/>
The clue in the crossword cipher 

 - New York  :   Grosset & Dunlap,   1995 
 - 177 p. 
 - Nancy Drew mystery stories ;   44 .
<br/><br/><label>ISBN: </label>9780448095448 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crosswords--Juvenile fiction<br/>Cipher and telegraph codes--Juvenile fiction