Laurie Ferris knew what it was like to have an animated son. She knew about the high-energy level, the wide mood swings and the rough play style that came with having a child as active as her Zachary was. However, unlike most mothers, Laurie also knew what it was like to fear for her life, living in the same home as a 7-year-old who had once tried to kill her.
"When he was angry, it was over the top. It wasn't like a normal tantrum," she said. "He would scream, he would pick toys up, wing them at us, punch holes in the wall, smear feces on the wall."