Count Averin. Sorcerer of the Russian Empire

Magical Petersburg, 1982.
Count Averin investigates the murder of a nobleman's son, for which the divs, cruel magical beings from the Wasteland, are accused. They obey humans, but go out of control if they sense blood or weakness in their master.
Averin realizes that this is not the first murder and a very powerful div is behind the crimes. At the same time, a huge demonic cat appears on Petrogradka...