Private detective Tatyana Ivanova is asked for help in investigating the murder of Konstantin Vorotnikovsky. The guy was stabbed to death at the door of his own apartment, and now Kostya’s cousin really wants to find out the truth about the death of his relative. There is little evidence, almost no witnesses, and the police believe that the case is a “hanging fruit.” Therefore, all hope lies only in the famous detective, who has already solved many crimes... Marina Serova is a phenomenon of the modern domestic detective genre. A graduate of the Law Faculty of Moscow State University, she worked in the Prosecutor General's Office. From 1987 to the present – an employee of one of the special services. Participated in combat operations and operational activities. Author of a number of action-packed stories, the total circulation of which exceeds twenty million copies.