How can we identify which people with mental disorder present an undue risk of violence? This book reviews the huge amount of research and clinical literature available on violence risk assessment, explaining the wide range of factors associated with the commission of violence, and providing a much-needed resource for mental-health professionals. This book is published for the Zito Trust, an independent, registered charity which has been campaigning for reform to mental-health policy and law since the death of Jonathan Zito in December 1992.