Areas of professional practice, such as law, psychiatry, and the behavioural and social sciences, overlap at numerous points in terms of underlying concepts and basic research. They also intersect at an everyday level in their work with individuals whose multiple problems simultaneously require attention from legal, mental health, and social services professionals. Behaviour, Crime and Legal Processes explicitly sets out to close the gaps between the professions. It addresses the questions that arise at the meeting-points and cross-roads of different backgrounds and spheres of activity, thereby helping people working in these different fields to grasp the nature and implications of each other’s perspectives and adopt a better-informed approach to inter-disciplinary work.