Reviewed by Duncan D. (age 8)
This book was the best in the 39 Clues series. I think this was the best book in the series because it was the most suspenseful and I love suspense stories. I felt tense as I read this book. As I read this book I kept on wondering if Amy and Dan were going to survive. My favorite part of this book was when Amy and Dan learn a Madrigal secret that seems impossible to accomplish. I think this is a good book for anyone who likes mysteries.
I recommend this book series to 3rd to 4th graders. I recommend this book to these grades because there is a lot of strong vocabulary that most of the lower grades wouldn’t know. People who like mysteries and love to solve problems will adore this book. This book has 190 pages with no pictures and 22 chapters. So go run to the library to get this book before it’s too late!