This book is part of a book series called Otto Undercover .
This book has been graded for interest at 7-9 years.
There are 127 pages in this book. This is a chapter book. Publishers market early chapter books at readers aged 6-10 years. This book was published 2006 by Turtleback Books .
Dan Santat is the Caldecott Award winning illustrator of The Adventures of Beekle . He lives in California.
This book is in the following series: