Experience the brand new work on intervention law: all the material from basic and main studies compactly presented in one volume, comprehensively prepared by renowned experts, particularly student-friendly, and up-to-date. Police interventions in fundamental rights require clear legal foundations that unambiguously define their conditions, scope, limits, and the specific powers of action in the field. Based on real situations from everyday police work and the current curriculum of the 'Police Enforcement Service NRW' program at HSPV NRW, this textbook explains the entire spectrum of intervention law in an easily understandable manner. Starting from the principle of the rule of law, the assignment of tasks to the police, and the resulting legal authorizations (general clauses or specific norms), the authors cover topics such as searches, questioning, interrogation, seizure, deprivation of liberty, coercive measures, domestic violence, physical examinations, and drone use. Tips for exam preparation and model solutions for standard cases in the basic study round off the work. Marcello Baldarelli, Peter von Prondzinski, Christof Römer, and Marcel Schmiedtke are active or former police officers with many years of professional and operational experience in various functions and service areas.