Editor's note: The following is an excerpt from "Inside the Mind of a Teenage Killer." It is reprinted with Chalmers' permission.

Luke Woodham called himself a social reject.

He was the product of a painful divorce. A victim of clinical depression as a child. A casualty of merciless bullying. An angst-ridden teenager, who had his heart shattered by his first and only love.

On the outside, Luke resembled the average teenager. On the inside, he was a dormant volcano. But what made this baby-faced 16-year-old, who had seemingly typical adolescent problems, erupt in such a volatile fashion?

What catapulted Luke into a violent rage on Oct. 1, 1997, in the small town of Pearl, Miss., where he bashed his mother to death with a baseball bat, shot two classmates to death and injured seven others?