Страх над Невой - All Seasons

The year is 1967. A series of mysterious murders of women are taking place in Leningrad. Experienced KGB major Chubin and police captain Fedorov are assigned to catch a maniac who leaves mysterious signs next to the victims. 

Crimes occur at night in the area of the Obvodny Canal, in the very center of the city. The killer leaves unusual symbols painted in charcoal next to the victims. Major Chubin, who is investigating the case, has already encountered occult murders — a few years ago he tried to uncover a religious sect, but the mission failed, and he himself almost died. Now Chubin lives with a fear of the dark and a sense of guilt for an accidental murder. His partner becomes Captain Fedorov, a former policeman who is in love with his best friend's wife. Being under tremendous pressure from the leadership, they are trying to figure out the maniac and prevent future murders.

Leningrad. Summer of 1970. Three people suddenly die — they burn down in the courtyard of the research institute in front of dozens of witnesses. The city froze in horror. Major Vladimir Chubin is assigned to lead this complicated case and is given an assistant from Moscow, Lieutenant Egor Fedorov, the only one he can rely on in this matter. The partners will have to find out if the new serial murders are connected with the return of the cult of Chernobog, or if they will have to face even greater evil?