A review by tishreads
The Explorer's Code by Allison K. Hymas

4.0

The puzzles in this book were fun and some are able to be solved on your own if you have knowledge of various ciphers. Each of the characters was interesting, though I found myself getting frustrated at how long it takes the three of them to communicate with each other. There's the typical clueless adults and plenty of red-herrings to throw readers off.

Overall it was an enjoyable addition to the puzzle-based-mystery genre that fans of Book Scavenger and Mr. Limoncello will heartily enjoy.