The "Handbook for Criminal Investigation Procedures" is a comprehensive reference work specifically designed for lawyers practicing in the field of criminal law. In its 10th revised edition, the handbook provides a structured and practical presentation of over 300 relevant keywords that are significant for conducting investigations. The alphabetical arrangement of topics allows for quick and targeted information retrieval. Each keyword is presented in three different formats: a brief summary for quick orientation, a detailed examination for a comprehensive overview, and practical recommendations for specific action steps. This thoughtful structure makes the handbook an indispensable tool for lawyers who want to support their clients as effectively as possible during investigations. The contributions come from experienced professionals who ensure the quality and currency of the work.