Name: The Unbreakable Code
ISBN: 9781627791168

Jennifer Chambliss Bertman

Could books hidden through Book Scavenger be linked to an arsonist's web of destruction? Find out in Book 2 of Jennifer Bertman's Book Scavenger series. 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 a 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 fires multiply, and Emily and James race to crack the code of a lifetime. A Christy Ottaviano Book

The Unbreakable Code

Sarah Sammis

The Unbreakable Code by Jennifer Chambliss Bertman is the second of the Book Scavenger series. Emily and James get pulled into a challenge to break the cursed unbreakable code — a cypher associated with a number of mishaps, including the sinking of the Niantic. While they are hunting down clues to break the code, an arsonist who calls themselves the Phoenix is starting fires around San Francisco and someone is bound to get hurt. 

http://pussreboots.com/blog/2017/comm...

Kim Tyo-Dickerson

Fun sequel, as good as the first with lots of twists trying to figure out a centuries-old unbreakable code and find hidden treasure in San Fransisco. Lots of book life and book love to enjoy here, as well as playful interludes planning for a middle school school dance and creating a mad-cap race that leads to the third and final book in the series The Alcatraz Escape.

Lynn Braden

Emily and James have stumbled across another mystery; this one involving the legendary "Unbreakable Code" that supposedly will lead to some kind of treasure. Emily is desperate to find this treasure to help her parents, who are in financial trouble. To solve the mystery Emily and James must find several encryptions placed inside books written by Mark Twain that have been hidden around San Francisco and using the Book Scavenger website for clues. When they realize that their teacher, Mr. Quisling may be after the same clues, the two sleuths begin to follow him in hopes of getting a jump on the mystery.

The Unbreakable Code is another fun book in the Book Scavenger series. As the title suggests, this episode focuses more on code breaking and less on books, however, there is still an element of the story involving books. There is very little in this book that hinges on the personal lives of the characters, but the plot is very thought-provoking, requiring some thought as the book is being read. Overall, The Unbreakable Code is an enjoyable read, especially for those who like puzzles and codes. 
3 1/2 stars.