Crack the codes. Solve the clues.
Unlock the story!
The Code Busters Club series makes reading a mysterious adventure packed with puzzles, codes and surprises.
Explore the Code Busters
About Code Busters Club
Events
About Penny Warner
About Penny Warner
Bring Penny Warner's Code Busters Club event to your School!
About Penny Warner
About Penny Warner
About Penny Warner
Multiple award-winning author Penny Warner has published over 80 books for adults and children, including the three-time Agatha Award-winning middle grade series, THE CODE BUSTERS CLUB (Lerner).
Crack the Code
About Penny Warner
Crack the Code
Learn to talk in flags, tap in dots, and read messages from ancient times.
Teacher's Guide
Code Busters in Japanese
Code Busters in Japanese
Turn this book into a powerful lesson. Explore ready-to-use pre- and post-reading activities designed to support meaningful instruction.
Code Busters in Japanese
Code Busters in Japanese
Code Busters in Japanese
Illustrations by Mr. Hyogonosuke, Media Factory, Japan
Meet The Code Busters
Code Busters in Japanese
Meet The Code Busters
Curious about the characters? Click to learn more about their personalities, motivations, and journeys.
Test Your Skills!
Test Your Skills!
Meet The Code Busters
Do you have what it takes to be a real Code Buster? Take the test!
Official Handbook
Test Your Skills!
Official Handbook
Decipher the code, then get your free printable top secret handbook!