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Publisher's Summary

Emily and James's teacher Mr. Quisling is up to something mysterious. First, there's the news clipping with an unusual note that he drops at a book event. Then Emily and James discover their teacher has been receiving encrypted messages in a series of Mark Twain books hidden through Book Scavenger.

When Emily and James decipher the messages, they begin to suspect Mr. Quisling is hunting a long-rumored treasure of buried gold. Intrigued by this prospect and what it could mean for her family's financial struggles, Emily and James set out to best their teacher. But when they research Mark Twain and the Gold Rush era, they learn about a serial arsonist from the 1800s who called himself The Lightkeeper, and the seemingly unrelated string of arson fires around San Francisco suddenly seem more ominous. Especially when they realize the fires have been set in the exact locations where Mr. Quisling found the Mark Twain books.

Is a copycat Lightkeeper trying to stop Mr. Quisling? Or could Mr. Quisling himself be the arsonist? By the time Emily and James uncover the answers, much more is at stake than whether or not Emily will have to move again.

©2017 Jennifer Chambliss Bertman (P)2017 Recorded Books

What listeners say about The Unbreakable Code

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friendship

friendships are a must to have in life. together you never know what you might experience or uncover. this was great.

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Great story to listen to with your kids

In the second installment of the Book Scavenger series, Emily and James are intrigued by a code that dates back to the gold rush and has never been broken. Along the way they discover a secret quest their teacher is on and get in the way of an arsonist. 

This is another fun book in this middle grade series.  If you have readers this age in your life, this is a great book to do a buddy read with them!

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Great story.

I liked the characters. The storyline was interesting. It moved quickly to not lose my interest.

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A lot of twists

several surprises kept us guessing
very enjoyable story for kids and grown ups
recommend for ages 9 and up

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Good

It was awesome for me and I loved it. I listened to this book for a school project;definitely recommended this for other kids.

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Awesome book

I love this book it is probably my favourite audible series!!! This book is amazing

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we love this series

This was recommended to us based on our enjoyment of the Lemoncello series. we actually like this series better!

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Good hunting with puzzles

middle grade wishes come true in a hunt for books, treasure and the bad guy

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super sequel

I enjoyed this one as much as the first one. Actually hoping for #3.