Codebreaker
Jay Martel
Wendesday Books
Published July 22, 2025
Amazon | Bookshop | Goodreads
About Codebreaker
This original, interactive thriller from debut author Jay Martel follows a brilliant teenage girl as she races across D.C. to decode the clues her father left behind, which may just be the key to saving the country from a devastating tragedy.
Mia Hayes has peaceful plans for the summer—find a part-time job at a coffee shop and work on her application for Harvard. Those plans are shattered one night when government agents arrive unannounced at her home seeking something they believe her father has taken. When the dust settles, her mother is dead and her father is gone, a fugitive on the run.
Three weeks later, and still reeling from her father’s betrayal, Mia spends her seventeenth birthday at a protest in the heart of D.C., where she meets Logan, a rebellious and charming hacker. Just as she’s enjoying her first happy moment since the night her world exploded, a voicemail from her father arrives to upend everything she believed about her family, her past, and what really happened that night three weeks ago. Even more, the voicemail hides another encoded message inside which, once Mia solves it, sets her and Logan off on a mission from her sleepy suburb straight into the heart of the federal government.
With the same agents now hot on their trail, Mia and Logan must navigate their way through American history’s most iconic sites and uncover its most well-hidden secrets to reveal the truth about her family and stop a deadly attack.
In this non-stop thrill ride, the reader has the chance to test their own codebreaking skills alongside Mia, lending an exciting interactive element to this page-turning thriller packed with action, romance, and life-changing revelations.
My Review
One of the really clever things about this book is that it allows and encourages readers to break the codes along with Mia. Once the reader has all the information necessary to break a code, a certain symbol appears on the page. At that point, you can pause and break the code or keep reading and see Mia reveal the answers. I love that concept, and I had fun figuring the codes out myself as I read.
The story also kept me engaged. It’s fast-paced with short chapters, so it felt like I was reading really fast. I liked both Mia and Logan, and appreciated that the authors balanced Mia’s focus and intelligence with her fresh grief. There was one thing that I guessed before it was revealed. I don’t think it altered my enjoyment of the story.
Codebreakers feels like a great book for readers aging out of middle grade and into young adult fiction who like intense, action-packed stories. The interactive element would be great for kids interested in codes. I hope there are more books like this in our future!
Content Notes for Codebreaker
Recommended for Ages 12 up.
Profanity/Crude Language Content
A few instances of profanity.
Romance/Sexual Content
Kissing.
Spiritual Content
None.
Violent Content
Situations of peril. Gun violence. Death of a parent. In two scenes, a person with a gun threatens to harm someone else unless Mia cooperates with them.
Drug Content
None.
Note: This post contains affiliate links, which do not cost you anything to use but help support this blog. I received a free copy of this book in exchange for my honest review. All opinions are my own.