Obsession is not a reticent discourse within horror cinema. Most of the horror genre’s notorious villains (and their nefarious intentions) are obsessive: Norman Bates is the obsessive lunatic masquerading as his deceased mother, Freddy Krueger is the obsessive dream demon hell-bent on vengeance, and John ‘Jigsaw’ Kramer is the dogmatic obsessive who ‘rehabilitates’ his victims […]