"Readers are active participants . . .and are frequently invited to solve classic forms of code, such as Morse and semaphores. This intriguing tale has vivid characters and such a tantalizing cliffhanger that readers won t be able to resist cracking the next Code Busters." "Kirkus Reviews
"
Cody, Quinn, Luke, and M.E. may be really different, but they all share one thing in common: they love playing around with codes. In fact, they love codes so much, they have their own private club, with a super-secret hideout and passwords that change every single day.
When Cody and Quinn notice...