If you can’t decide on a book, choose this one! It is full of adventures, codes, mysteries and a little romance. If you like adventures, this book was made for you! Also if you are nerdy, this is also for you!

i had an amazing time reading this book. I read it twice

This is a great book for kids who like mystery and math

awesome spy book. If you like this one, listen to Spy School. This is meant for 10+ and I loved it. My mom did too!

BTW If you like this book, you should definitely check out other series by Stuart Gibbs including Spy School, The Last Musketeer, and FunJungle.