?

I think it's weird how he shoots Christy Bruter in the stomach and not in the head of heart.  She was the first one on the list so you would think he would for sure want to kill her and know she was dead.  She was Val's worst enemy.  I don't know why he shot Mr. Kline either.  He didnt't do anything wrong.  He didn't really know where the other teacher was and he was being civil with Nick and he just went right along and shot him.  Another part of the text I was questioning about was why the man who cam in to question Valerie didn't question Jeremy more then he did his parents.  And something I don't like was how the book didn't tell about when he shot himself or at least it just hasn't told yet.  Did he kill more people after he shot Valerie or was it right after that? Did he go up to her to see how she was?