According to Erika Karres, all it would have taken to prevent the Columbine massacre was one person - one parent, coach, or neighbor who recognized the signs. In this book, Karres distills 30 years' experience working with students as an antiviolence expert into a sensible guide for adults dealing with the current youth crisis. She explains the indicators of potential violence - including weak human connections, emotional difficulties, weapons access, and school alienation - and recommends ways adults can help troubled kids.