About the book: 2014 / Before the reader is the first separate edition of the notes of the outstanding Russian detective V.V. von Lange (1863–1918) in more than 100 years , who worked for many years as an assistant to the head of the detective department of Odessa and the head of the Kharkov detective police. Fascinating stories about crime investigations are combined in this book with characteristics of various categories of criminals, revealing the criminal schemes of pickpockets, robbers, murderers, swindlers, and counterfeiters. These are the memories of a talented investigator and master of intelligence work, who should rightfully take his place among the most prominent detectives of the Russian Empire - I. D. Putilin, A. F. Koshko and others.