Calculation and extension of the terms of the preliminary investigation . Educational and Practical Manual”, created by the team of authors, is an indispensable resource for all who are interested in the criminal process and law enforcement practice in Russia. This manual not only highlights the theoretical aspects of calculating and extending the terms of a preliminary investigation, but also offers practical recommendations that can be useful to both legal practitioners and law students. The book focuses on key issues relating to the timing of the preliminary investigation, which are an important aspect of the criminal process. The authors analyze in detail how to correctly calculate these terms, what factors may affect their extension and what consequences may arise in case of their violation. The reader will find here not only theoretical calculations, but also practical examples, which makes the material more accessible and understandable. This book will be of interest to a wide range of readers: from law students and postgraduates to practicing lawyers and investigators. It will be a useful tool for those who want to deepen their knowledge in the field of criminal law and procedure, as well as for those who are faced with real situations in their professional activities. If you are looking for information on how to properly apply the rules of criminal procedural law, this guide will become your reliable assistant. The topics raised in the book are of great importance for law enforcement. Calculation of the timing of the preliminary investigation is not just a formality, but an important element that can significantly affect the outcome of the criminal case. The authors focus on how to properly take into account all the nuances in order to avoid errors that can lead to the cancellation of indictments or even the release of suspects. In this context, the book raises issues of legal responsibility and protection of the rights of citizens, which makes it especially relevant in the light of modern realities. The style of the authors is clear and accessible, which allows even complex legal concepts to be explained in simple language. This makes the book not only useful, but also interesting to read. The team of authors includes experienced lawyers and practitioners, which guarantees the high quality of the material presented . Their previous work has already proven itself in the legal environment, and this manual will not be an exception. If you are looking for books on criminal law that will help you understand the intricacies of the process and teach you how to correctly apply the law, "Calculation and extension of the terms of the preliminary investigation. Training manual" - this is exactly what you need. The book will become not only a textbook, but also a reference book for all who seek professional growth in the field of jurisprudence .. Do not miss the opportunity to enrich your knowledge and skills by immersing yourself in the world of criminal procedure along with this unique work. It will help you not only to understand the theory, but also to learn how to apply the knowledge gained in practice, which is especially important in a dynamically changing legal field.