Probably, private detective Tatyana Ivanova has never had such a case before - simple and clear at first glance. But as soon as they looked closely at it, it turned out to be confusing and even mysterious. She had to check almost a dozen defendants who could be suspected of literally committing a brutal murder. Which of them set a Rottweiler on an elderly woman, and the unfortunate old woman died on the spot, right next to her entrance? So who is he, a brutal killer? Son, grandson, daughter-in-law or one of the tenants? And was it really just money and a two-room apartment that caused the crime? But not everything is so simple, and so many surprises await Tatyana at every new turn of the investigation...