The book "Preliminary investigation in the OVD . The course of lectures” is a unique work created by the team of authors, which is an extensive and in-depth study of the basics of preliminary investigation in the internal affairs bodies. This publication will become an indispensable assistant for both law students and practitioners seeking to deepen their knowledge in the field of criminal procedure and investigative activities. The book focuses on the preliminary investigation process, which is the most important stage in criminal proceedings. The authors consider in detail all aspects of this complex and multifaceted topic, ranging from theoretical foundations to practical recommendations. Each lecture in the book is imbued with relevant examples from judicial practice, which allows the reader not only to learn the theory, but also to see how it is applied in practice. This makes the material accessible and understandable, even for those who are just starting their journey in law. The book will be interesting to a wide range of readers .. Law students, graduate students, as well as practicing lawyers and investigators will find a lot of useful information in it. It can also attract the attention of those interested in law, forensics and criminal procedure. If you want to understand how the pre-trial investigation system works, what mechanisms are involved in investigating crimes, and what are the rights and duties of investigators, this publication will be a real discovery for you. The topics raised in the book cover a wide range of issues, including the rights of suspects and defendants, methods of evidence collection, procedural deadlines and peculiarities of interaction with other authorities. The authors emphasize the importance of respect for human rights in the investigation process, which makes the book relevant in the light of current trends in law enforcement practice. In addition, ethical aspects of the work of investigators are also considered, which emphasizes the importance of moral norms in legal activities. The style of the authors is distinguished by clarity and logical presentation, which makes the material easy to perceive. They use an accessible language, avoiding overly complex terms, which allows readers without a legal education to easily understand basic ideas. In addition, the book includes many illustrations and diagrams that help to visualize information and better absorb the material. It is worth noting that the team of authors consists of experienced practitioners and theorists, which gives the book special value. Each of them makes its own unique contribution, which allows you to create a multifaceted and comprehensive view of the subject. This edition will become not only a textbook, but also a reference book for everyone who wants to understand more deeply the mechanisms of the internal affairs bodies and the criminal justice system as a whole. If you are looking for books on the topic of criminal procedure, criminology or justice, "Preliminary investigation in the Internal Affairs Department . The course of lectures" is what you need. It will help you not only to expand your knowledge, but also to prepare for the real challenges that lawyers and investigators face in their daily practice. Do not miss the opportunity to immerse yourself in the world of criminal procedure and learn how the system works, which protects the rights of citizens and ensures justice.