This handbook is designed to help aspiring Criminologists to pass and even top the board examination without the expense of attending regular review classes and without paying a significant amount of money. Non‐Criminologists can also maximize the use of this handbook as it also provide questionnaires for the PNP Entrance Examination. Moreover, in‐service PNP personnel who will be due for promotion can likewise make use of this handbook. This piece of work also provides references that can be useful in the daily work of police officers.

This book is intended to equip the students with sufficient knowledge of fundamental principles in examination of questioned documents. Likewise, it comprises topics on the traditional and modern way of examination of suspected disputed documents that would lend the students verse of knowledge and ideas on the different angles and aspects of the examination.

This instructional material is designed to equip Criminology students with sufficient knowledge on the concepts of planning as a basic requirement in all types of operations of selected Law Enforcement and Public Safety Agencies and the respective legal mandates and limitations under existing laws.

This book is compendious of topics, lessons, principles, related laws and issuances in the Philippine National Police (PNP). Much of the contents are products of the authors’ researches and others are from the notes and readily available or open-source references. Commentaries and insights from the authors’ decade-long experiences in the academe, legal profession, and law enforcement formed part of the book.