Tom Shaman, an ordinary American priest, having stood up for a girl, accidentally kills two people who attacked her. In an attempt to escape from himself, he leaves the rank and leaves for Europe. And it must happen that in Venice, the city where he stopped for a while, Shaman finds himself an unwitting participant in the investigation of a terrible crime - the murder of a young Croatian woman. The most ominous thing about this case is that exactly six hundred and sixty-six knife wounds were found on the girl’s body—the biblical number of the Beast. Everything indicates that an unknown satanic cult is involved in the murder, especially since one crime is followed by a chain of others...