This is careful scholarship, a great book, and a fundamental contribution to the literature on alcohol and violence. Through wide ranging consideration of theory, sophisticated understanding of measurement and method, and recognition of the practical importance of harm reduction, Parker and McCaffree address a complex relationship often left to the periphery of criminology and sociology. The series of studies presented by the authors coalesces nicely to provide the reader with evidence about the alcohol-violence relationship and about the effects on violence of alcohol policy that cannot be ignored. From a school-based mental health intervention among adolescents, to raising the minimum drinking age, to an outright ban on alcohol in one town, the authors reveal the power of policy interventions to reduce alcohol-related aggression, violence, and other negative outcomes.