Evil Pen Pal (Cyon #14)

You have been corresponding with Billy, a boy who lives in Florida, for two years. So you are very excited when Billy writes that he is coming to visit you this summer! But the night before he is scheduled to arrive at your house, you receive a strange letter warning you that Billy is someone to be feared.You brush aside your worries when Billy arrives. After the hundreds of letters you've exchanged, you feel like you really know him. Don't you?