This is a great story for kids (ages 9-15ish), but even the adults may enjoy it!
It especially appeals to people who don't like to read long stories. The chapters are short, the plot moves swiftly, yet it is still a sophisticated story with plot twists, and a surprising ending.
This book was written so that older children/young adults could read and understand it with no problems. As an adult, please don't be misled into thinking it'll be 'beneath you' to read this wonderful book, or you'll miss out on a really good read!