The Secret of the Skeleton Key (The Code Busters Club Series #1)

Cody, Quinn, Luke, and M.E. may not have much in common with each other, but they do 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 what could be a code on the window of their neighbor's house—the neighbor they call Skeleton Man—the club gets to work. And it is a cry for help! Now the Code Busters are on the case—and nothing will stop them fro…