Witch"s ring

1927. The employee of the special group of the OGPU special department Vadim Arsenyev returns from a business trip to Moscow, but not far from Perm he is removed from the train and delivered to the local criminal investigation subdivision. It turns out that a mysterious murder with the use of unknown weapons has been committed in the area. In addition to the surrounding villages, there are stubborn rumors about as if the aircraft that appear in the sky of the outlandish structure and people in silver overalls. The police consider such stories a fiction, but the murder case receives a serious resonance, so Vadim, as an anomalous specialist, is asked to connect to the search for mysterious criminals