This introductory textbook provides a comprehensive overview, covering historical beginnings, the fundamentals of legal areas relevant to contemporary forensic psychological assessments, and the most important application areas. The authors discuss the work of forensic psychological experts and assessors, addressing the growing number of such professionals and their increasing engagement in clarifying issues such as criminal responsibility, credibility, or criminal prognosis. The volume is consistently aligned with the curriculum that students must cover within two semesters and takes into account the study requirements in Germany, Austria, and the (German-speaking) Switzerland. Numerous practical examples enhance the book.