"Billie and the Secret Mystery Club have found a mysterious note - in code! What does it say? And who could have sent it? One thing's for certain: it will take all the skills of the SMC to solve this mystery..."--Page  of cover.
What people are saying - Write a review
LibraryThing ReviewUser Review - wichitafriendsschool - LibraryThing
A slightly older Billie, her best friend, Jack, and other familiar friends from the original series, solve mysteries at school and in the neighborhood, using their smarts and common sense to get to ... Read full review