This book is part of a book series called Otto Undercover .

. This book is part of a reading scheme, meaning that it is a book aimed at children who are learning to read.

There are 128 pages in this book. This is a chapter book. Publishers market early chapter books at readers aged 6-10 years. This book was published by Harpercoll .

Dan Santat is the Caldecott Award winning illustrator of The Adventures of Beekle . He lives in California.