The Wicked Heart — Christopher Pike

He did not want to kill.

Dusty Shame was a high school senior, and a serial killer. Already he has murdered-three young women, and he has more planned. Yet Dusty did not want to hurt anybody. There was something inside him, or perhaps outside him, that compelled him to kill.

Sheila Hardolt has lost her best friend to Dusty's insane attacks. It will be her task to probe the clues Dusty has left at the site of each of his murders. Clues that will point her into the past--to a time when a large portion of mankind lost all sense of decency. There she will find the seed of Dusty's evil compulsion, the Wicked Heart, and the reason why it did not die the first time it was destroyed.