I really love this book! It is full of action and mystery. Charlie is such an amazing character. This book is truly a masterpiece of a novel. I've read it so many times and every time I read it I find something new about this story. You should definitely read this book!

This is a great book and the adventure is so interesting. I recommend this book to everyone.

This was one of the best PJ library books I have ever read. I love science and it is really like sciencey (I made that word up) and you learn a lot about Albert Einstein. If this is not a choice and you want to read it, go to amazon.

I love this book so much, it's now a fav of mine! So awesome, and it's good for I'd say 9 and a half and up! I looove it!!

It's full of action, humour, and adventure! I thoroughly enjoyed reading this book, there wasn't even a hint of boredom in this book! Definitely recommend!