This brand new textbook provides a complete course in forensic psychology, covering the criminal justice system, law and legislation, and treatments and outcomes for offenders. It offers rigorous coverage of the major topics: from theoretical concepts and research methods to explaining criminal acts and patterns of crime. The authors, both from leading institutions and well-known in the field, guide readers through the interlocking systems of criminal justice, mental health and social service provision, providing a deeper critical appreciation of what motivates crime and how criminal behaviour can be understood, assessed and treated. This text will be core reading for upper level undergraduates and postgraduates studying forensic psychology, either as a module on a BSc Psychology degree or on an MSc for trainee Forensic Psychologists. It will also be ideal for early career practitioners.