Blackstone's for National Investigators' Exam Candidates

Blackstone’s Police Investigators is a brand new service for trainee investigators preparing for the National Investigators' Examination (NIE). Blackstone’s offers three distinct packages to suit your needs:


Blackstone’s Police Investigators’ Manual and Workbook is the online edition of the only official study guides for the National Investigators' Exam (NIE). Providing all the legal information relevant to your role as a trainee investigator along with a range of practical exercises and scenarios, it allows you to track your revision progress and target syllabus areas, making your study time more effective.

Candidates sitting the exam in 2018

Blackstone's Police Investigators' Q&A is your essential revision tool for the National Investigators' Examination (NIE) examinations. With a growing database of over 650 multiple-choice questions based directly on the content of the Blackstone's Police Investigators' Manual, it offers the most authoritative means of self-testing outside of the NIE.

Candidates sitting the exam in 2018

Blackstone’s Police Investigators Manual, Workbook, and Q&A is the latest study resource for candidates taking the National Investigators’ Examination (NIE), providing fully searchable, online editions of the Blackstone’s Police Investigators’ Manual and Workbook, as well as a unique, NIE-tailored Q&A database.

Candidates sitting the exam in 2018