The book "Preliminary investigation in the OVD . Textbook. H. 3" edited by M. In. Meshkova is an important resource for all those interested in criminal law and the practice of investigation in the internal affairs bodies. This is the third part of the textbook, which has become an indispensable tool for law students, practicing lawyers, investigators and anyone who seeks to deepen their knowledge in the field of criminal procedure and investigative activities. In this book, the authors carefully analyze the key aspects of the preliminary investigation, considering it as an important stage in the criminal process. The reader will be able to get acquainted with the basics of the organization of investigative work, the peculiarities of the interaction of investigators with other participants in the process, as well as with the methods and techniques that are used during the investigation. The book covers a wide range of topics, including the legal basis of the investigation, interrogation tactics, the collection of evidence and the analysis of the information received. Each section is written taking into account current changes in legislation and practice, which makes the material especially valuable for professionals. Who can like this book? First of all, it will be of interest to law students, graduate students and teachers who are looking for high-quality educational materials to prepare for classes . It will also be useful for practicing lawyers, investigators and law enforcement officers who want to improve their skills and improve the efficiency of their work. Readers interested in law and criminal justice will find in the book a lot of useful information that will help them better understand how the pre-trial investigation system works in Russia. The topics raised in the book are relevant and important for modern society. In the context of constant changes in legislation and law enforcement practice, knowledge of the basics of preliminary investigation becomes necessary to ensure the rule of law and protect the rights of citizens. The book raises issues of ethics in investigative activities, the importance of respecting the rights of suspects and accused, and the role of the investigator in the process of establishing the truth. It helps readers realize that the consequence is not just a formal procedure, but a complex and multifaceted process that requires high qualifications and moral responsibility. The style of the authors is distinguished by clarity and accessibility of the presentation, which allows even complex legal concepts to be presented in an understandable form. M. In. Meshkov, as an editor, made a significant contribution to the structuring of the material and its adaptation for a wide audience. He is also known for his work in criminal law, which adds additional value to this textbook. His experience and professionalism make the book a reliable source of information. If you are looking for a high-quality publication on criminal law, which will help you understand the intricacies of the preliminary investigation, then “Preliminary investigation in the Internal Affairs Department . Textbook. H. 3" would be a great choice. This book will not only expand your knowledge, but also help you become a more competent specialist in the field of law. Do not miss the opportunity to immerse yourself in the world of criminal procedure and investigative practice, enriching your knowledge and skills that will be useful both in your studies and in your professional activities.