With broad, in-depth coverage of this fascinating subject, Introduction to Forensic and Criminal Psychology remains the most authoritative, readable and popular text in the field. Theory is prominent throughout and a range of in-text features -- substantially enhanced in this new edition -- make this an engaging and valuable resource. The fourth edition is revised to include new chapters on therapy in prison and the psychology of lie detection, and has greatly extended coverage of courtroom processes. It has been brought fully up-to-date with significant new research. An interactive website supports this book at www.pearsoned.co.uk/howitt. This features a range of useful resources including multiple choice questions, example essay questions, links to further reading, a guide to becoming a forensic psychologist as well as interviews with researchers about their work in the field. Clear and comprehensive, this is an essential textbook for undergraduates studying psychology, applied psychology and criminology. It is also extremely useful in many other subjects for which students need an understanding of how psychology relates to criminal justice and the law.