This is volume 39 in 39 Clues-Cahills Vs. Vespers .

This book has been graded for interest at 8-12 years.

This book was published 2013 by Scholastic Inc. .

David Baldacci is the author of many international adult bestsellers, including SPLIT SECOND and HOUR GAME. His novels have been published in over 30 languages in more than 80 countries, with 30 million copies in print worldwide. Rudy Baldacci is a freelance artist who lives in Glen Allen, Virginia.