Nurse Olga Danilina is absolutely happy: she is expecting a child from her loved one and will soon marry him, her dear Yuri is a wealthy businessman and a wonderful person who has no problems and enemies... Or does he? When Yuri Stavrov is found with a knife in his chest , the investigation carefully checks the surroundings of the murdered man, but this does not yield results. Those few people who could wish Stavrov dead have a solid alibi... In this case, the killer did not have to get close to the victim - private detective Miroslava Volgina is sure of this. How is this possible? Miroslava’s longtime friend, investigator Shura Napoleonov, will have to figure it out.