This book was great. I recommend it to anyone who likes electronics, things that can happen in the future, secret government work, mysteries and Albert Einstein.

I didn't get the book from PJ our way but is very (infinity more very's) good.

This book is great because it has a lot of science and Albert Einstein in it. I felt really happy and mysterious.

I love it, so much fun

I really liked this book. It's super entertaining and there is a lot of action, but with a little bit of mystery behind it. I think really liked it!