So first off this is my first time reading The 39 clues series and I decided to pick up the last book of the series lol! Anyway, I've heard of this series so much when I was in elementary so I decided finally to pick it up! I thought this book was adventurous, bold, outstanding, and powerful meaning. In this book, I would give 3/5 stars. There are some things that I didn't enjoy in the book which I will state later. But let me explain what this book was about. This book is split into 4 sections.