Boyarka without anime, but with a detective story and elements of a production novel. Fifth book of the cycle. Things are going well for Alexei Levsky - nowhere better. He successfully married, became a full-fledged boyar from the boyars, was about to start receiving his share with a large government order for rifles, took the first steps in opening his own business, and also decided to leave his mark in science. Again, the sister had a gentleman to envy many. Against such a blissful background, Alexei did not even want to get involved in unraveling the next riddle he came across. But I had to - even a successful boyar can get an offer that cannot be refused. However, Alexey Filippovich is not very saddened by this...