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...