Chalk Man - C.J. Tudor
Tax included.
It was the Chalk Man who gave Eddie the idea for the drawings: a way to leave secret messages between his group of friends. And it was fun, to start with, until the figures led them to the body of a young girl. That was thirty years ago and Ed thought the past was behind him.
Then he receives a letter containing just two things: a piece of chalk, and a drawing of a stick figure.
As history begins to repeat itself, Ed realises the game was never over.