The Crucifixion Killer is stalking Glasgow, leaving victims'' mutilated bodies in a Christ-like pose. DCI Alan McAlpine - a renowned and successful police officer - is drafted in to lead the hunt, supported by local officers Dl Anderson and DS Costello. But the past holds horrific memories for McAlpine. He last worked this beat some twenty years earlier, when he was assigned to guard a woman - nameless and faceless after a sadistic acid attack - at a Glasgow hospital. An obsession was born..