This book has been graded for interest at 6-8 years.

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 2017 by Penguin Putnam Inc .

Henry Winkler (aka 'The Fonz') is co-author of the hugely popular Hank Zipzter series, based on his own experiences of dyslexia. Lin Oliver is a writer and producer of movies, books and television programmes for children. She lives in Los Angeles, USA, with her husband, Alan, and their three children.