I read this book with my nine year old daughter and we both loved it! We laughed we cried we cheered for the good guys! My daughters’ reading level is end of fourth grade but she struggled somewhat with the concept of corporate crime in the beginning so I started reading with her and we couldn't put it down. We hope they make it into a movie; it's a great adventure and full of amazing vocabulary and imagination.
I read this book aloud to my then 8 yr old and 6 yr old. My son would have been fine to read this on his own; my daughter (the 6 year old) benefited from me reading it to her. Fabulously fun and creative. There are lots of riddles that my son enjoyed trying to solve on his own. There is a definite good vs bad element to this story and it was fun to root for the good guy.