This book provides a concise introduction to the increasingly important field of forensic mental health. It aims to set out the key concepts as well as the way the discipline operates in the broader context of criminal justice and mental health care systems. It provides an ideal introduction to the subject for students taking courses in universities and training programs, for mental health practitioners in the early stages of their careers, and for professionals from other agencies needing an informed and up-to-date account of forensic mental health.