This book is really easy to read, i think it is great for beginner readers who loves action but for me at this age i am in i didn't really like it. this book it about a boy named Zac who is a secret agent who goes on missions, in this book he goes undercover to uncover who is the mole in the base. Zac went in dangerous trouble but finally discovered who is the mole. It was the boss but it is actually a agent who changed their appearance just to look like the boss. i would like to rate this book 1 star. By Jacky ( )