Blackstone's Police Investigators' Q&A 2023 is your essential revision aid for preparing for the National Investigator's Examination (NIE). The book contains a range of multiple-choice questions divided into four parts (General Principles, Police Powers and Procedures; Serious Crime and Other Offences; Property Offences; and Sexual Offences) which mirror Parts One to Four of the Blackstone's Police Investigators' Manual 2023. Each question is provided with a detailed and comprehensive answer, highlighting not only the correct response, but also the reasoning behind the incorrect responses. Full cross-references to the relevant Manual paragraphs and Keynotes encourage more effective studying, while a question checklist helps you track your progress.This book is an excellent learning aid and study resource which helps reinforce knowledge and understanding of the National Investigators' Examination syllabus. It is a must for students and their trainers preparing for the NIE exam. In addition, if you are a police promotions exam candidate looking for extra practice material, you will find this text invaluable.