This unique book simultaneously the most interesting collection of detective stories, describing the real events and people that really existed, and most objective and plausible testifying to pre-revolution Russia, as written with the responsible face of tsar's mode, but with large sympathy and understanding shows the most infamous parties of that society. Besides it is memoirs of surprizing man that gave up officer life of prosperous nobleman and, answering calling, became the best Russian detective, nicknamed by "Russian Шерлоком Холмсом". He converted the Moscow police led that in 1906 and found in the disgusting state, in the best in the world, as criminal lawyers confessed in 1913 in Geneva. Here another very important page of pre-revolution Russia opens up : matter of Бейлиса, that is now forgotten, but played large role in history of revolution 1917 Book is read easily, as a detective, because it a few detective stories are under one cover, and as a historical novel, because it and there is a historical certificate.A publishing design is stored in the format of PDF A4.