This book is about understanding and managing patients with severe personality disorders. It covers biological, psychoanalytic and cognitive-behavioural approaches and provides a pragmatic guide to best practice, based on the published evidence, where this is available. As well as discussing issues of severity, treatability and the range of appropriate management options, the content explores the common elements of effective interventions and covers early prediction, countertransference, disruptions of the therapeutic alliance, suicidal crises and what to do when dealing with dangerous, refractory and stalking patients. The chapters are authored by an international cast of distinguished investigators and innovators from the field. This is a holistic, practical guide to the treatment of patients with the range of these disorders and it should be read by all the members of the mental health team dealing with this challenging clinical group.