Cody, Quinn, Luke and M.E. like to create codes and solve them. They are the Code Busters Club. When they notice something odd going on with their neighbour (the so-called Skeleton Man), they have to decipher his codes to solve a mystery involving possible hidden treasure. Will they be able to figure out the mystery before it's too late? This is the paperback edition of a book beginning a new series from award-winning mystery writer Penny Warner.