Rubins for five sisters

The investigator should be honest and impartial, feelings only interfere with the matter. Borin has adhered to this simple rule all his life.
But there is a hole in the old woman. A cynical and experienced trace fell in love with a boy in one of the witnesses in a double murder case. Or not just a witness?
Yes, and it turns out to be difficult. The ruby ​​set, bequeathed to the descendants of the five sisters of the Pechenkin, is the key to obtaining considerable values ​​lying in the Swiss bank. After almost a century, one of the heirs, Leon, who owe it to local authority, finds an old testament and begins to search for relatives in the hope of gathering all objects together and getting an inheritance. And then the murder of one of the heirs and the loss of Seryog from the headset