This book outlines a comprehensive model of risk which draws on mainstream empirical research, threat assessment, developmental psychopathology, attachment theory, and a relational model derived from psychoanalysis. The framework incorporates intrapersonal and interpersonal dimensions and is designed to enhance the reader’s capacity to make a thorough risk formulation. The approach highlights the significance of childhood development in understanding violent and sexually violent acts, and the complicated interpersonal processes involved in managing individuals who have a propensity to violent enactment. These dynamic processes between people impact on risk and risk perception, and can distort judgement if not recognised and understood. Assessing Risk will be of practical use in enhancing the skills of professionals to assess and manage risk in a comprehensive and effective way, and will appeal to all those mental health and criminal justice practitioners working with risky individuals.