When Mark Howitt is invited back to Leila's flat and ordered to strip, he thinks he's about to have the experience of his life. Waking later he finds Leila gone from his side. Keen to leave, he opens the wrong door and finds he's entered a nightmare; behind the swaying Barbie dolls that hang from the ceiling is the body of the girl he just had sex with. Rhona Macleod's forensic investigation of the scene reveals the red plaited silk cord used to hang Leila to be a cingulum, a Wiccan artefact used in sex magick. Sketches of sexual partners hidden in the dolls provide a link to nine powerful men, but who are they? As the investigation continues, it looks increasingly likely that other witches will be targeted too.