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About the Author

Jennifer Chambliss Bertman was a book-loving, game-playing, puzzle-solving daydreamer of a kid who grew up in the San Francisco Bay Area. When she was eighteen, she interned for a magazine in Manhattan and fell in love with the publishing industry. She went on to intern for another magazine as well as a literary agent, edited a literary magazine, worked as a production editor for a major publisher in San Francisco, and worked as a freelance proofreader and copyeditor. She holds an MFA in creative writing and now lives in Colorado with her family. To learn more about her, visit her website or the following:

The Unbreakable Code

by Jennifer Chambliss Bertman
with illustrations by Sarah Watts

Mr. Quisling is definitely up to something mysterious, and Emily and James are on high alert. First, there’s the coded note he drops at a book event. Then, they uncover a trail of encrypted messages in Mark Twain-penned books hidden through Book Scavenger. What’s most suspicious is that each hidden book triggers an arson fire.

As the sleuthing friends dig deeper, they discover Mr. Quisling has been hunting a legendary historical puzzle: the Unbreakable Code. This new mystery is irresistible, but Emily and James can’t ignore the signs that Mr. Quisling might be the arsonist.

The clock is ticking as the arson fires multiply, and Emily and James race to crack the code of a lifetime.

Published by Christy Ottaviano Books/Henry Holt and Company
ISBN: 978-1-62779-116-8
Publication Date: April 25, 2017
  • Junior Library Guild selection, Spring 2017

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“Readers who loved the first volume will find this follow-up even more satisfying. Purchase extra copies where there are fans. –Katya Schapiro, Brooklyn Public Library”  —School Library Journal

“Making extensive use of San Francisco history and locales, Bertman offers another involving chapter book in the Book Scavenger series, which offers a large, interesting cast of characters, plenty of challenges for code enthusiasts, and more complexity than most middle-grade mysteries. The appended author’s note helps readers separate fact from fiction. Young readers captivated by these distinctive characters will be hoping for the series to continue. — Carolyn Phelan” —Booklist

“Brisk, bookish good fun for puzzle and code lovers.” —Kirkus

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