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

There are 299 pages in this book. This book was published 2010 by Penguin Putnam Inc .

ALAN GRATZ is the author of many critically-acclaimed books for children and teens, including Samurai Shortstop , an ALA Top Ten Books for Young Adults; Prisoner B-3087 ; The Brooklyn Nine ; Refugee ; and the League of Seven trilogy ( The League of Seven , The Dragon Lantern , The Monster War ). A native of Knoxville, Tennessee, Alan is now a full-time writer living in western North Carolina with his wife and daughter.