Inna was going to visit her friend when she noticed that the door was slightly open. It turned out someone had broken into Zhanna’s apartment and killed her! There were no signs of forced entry—the door had been opened with the family keys. And there were only two: one for Zhanna and her lover Vlad. More precisely, three: a third key belonged to the housekeeper, but the woman was killed three and a half months ago. Investigator Napoleon is sure the culprit is Vlad, because blood traces were found on his sleeve. But private detective Miroslava Volgina believes the real murderer still needs to be found…