Kass, Mallory <br/><br/>
The 39 Clues :  Mallory Kass 
the black book of buried secrets / 
 - New York  Scholastic  2010 
 - 186 p. 
<br/><br/> A book to save the world. The book in your hands is the ultimate source of Cahill knowledge. It contains every buried secret, every Cahill weapon or gadget, all the strongholds and each agent and founder. In it, you will discover the true story of Madeleine Cahill as well as what happened after Isabel Kabra was charged with murder. Nothing has been held back. Seven Cahill agents came together to bring you this book, betraying their branches and their most deeply held beliefs. They did it because there is an enemy approaching, far more powerful than the Cahills.<br/><br/> 
<br/><br/><label>ISBN: </label>9780545285049 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Young Learners<br/>Fiction<br/>Orphans<br/>Inheritance and succession<br/>Family secrets<br/>Spies in literature<br/>Spy stories<br/>Brothers and sisters<br/>Code and cipher stories
<br/><br/><label>Dewey Class. No.: </label>Fiction KAS-M