Riley, Clifford <br/><br/>
The 39 clues :  operation trinity / 
Clifford Riley. 
 - New York :  Scholastic Inc.,  2012. 
 - 142 pages ;  19 cm 
<br/><br/> the first Vesper attack on Jan van Eyck's altarpiece at Ghent in the 1600s, then jumps to WWII and young Grace Cahill's desperate bid to save the masterwork from the Nazis. 
<br/><br/><label>ISBN: </label>978-0-545-43143-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Code and cipher stories.<br/>Orphans--Juvenile fiction.<br/>Siblings--Juvenile fiction.<br/>Nazis--Juvenile fiction.<br/>Altarpieces--Juvenile fiction.<br/>Good and evil--Juvenile fiction.<br/>Ciphers--Fiction.<br/>Orphans--Fiction.<br/>Siblings--Fiction.<br/>Nazis--Fiction.<br/>Altarpieces--Fiction.<br/>Good and evil--Fiction.<br/>Adventure and adventurers--Fiction.
<br/><br/><label>Dewey Class. No.: </label>IBED-EFic. R573 2012