“The Era of Mercy”, “A Visit to the Minotaur”, “Vertical Races”... The action-packed novels of the Weiner brothers have had a cult status for decades and are rightfully included in the Golden Fund of Russian detective stories. They have been loved and read by several generations of readers. “The Era of Mercy.” Senior Lieutenant Volodya Sharapov came to work at the Moscow Criminal Investigation Department very young and inexperienced. Under the leadership of Gleb Zheglov, he learns the basics of operational investigative work and, regardless of personal time, fights banditry. “By groping at noon.” Years later, Vladimir Ivanovich is a true professional, having risen to the rank of lieutenant colonel, the pride of the department, and he himself shares his experience and knowledge and reveals the secrets of the profession to the young investigator Stas Tikhonov.