This is volume 1 in 39 Clues .

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

This book was published 2016 by Scholastic Inc. .

C. Alexander London is an author of books for children and adults. In addition to the Dog Tags and Tides of War series, he writes the Accidental Adventures novels for young readers and books like One Day the Soldiers Came: Voices of Children in War for older readers. When he is not writing books, he can usually be found walking around New York City talking to his dog.