About the book: year / A historical detective story that not only covers a legendary historical episode, but also captivates the reader with an amazing plot. A certain “postman” appears in the city, delivering letters to a twenty-year-old prescription Through these letters the reader learns the history of the defense of the Osovets Fortress. With the advent of the postman, life in the city literally turns upside down. Both government officials and criminals are interested in the mysterious stranger. What makes the postman deliver letters? What does he want to achieve?