Satan's Stratagem

During the night a girl had been found on the road, clothed only in a blood-soaked shirt; she had some weird diagrams on her stomach drawn in blood, and three figures of six on her forehead. She is not injured, but remembers nothing. Not long ago a student had been murdered whose body bore the same magic symbols as the girl's. A police commissioner and an experienced expert on black magic and magic rituals join forces to search for the perpetrators of ritual series murders linked to the mysterious existence of the Devil's Bible - the largest manuscript book in the world.