Riley, Clifford.  <br/><br/>
"The 39 clues: Cahill files, spymasters" 

 - New York   Scholastic Inc.   2012 
 - 250 
<br/><br/><label>ISBN: </label>978-0-545-56468-7 
<br/><br/><label>Dewey Class. No.: </label>J R451ts