A decade ago, teacher Nathan Brookes saw four of his students walk up a hill and vanish. Only one returned - Olivia - starved, terrified, and with no memory of where she'd been. After a body is found in the same woodland where they disappeared, it is first believed to be one of the missing children, but is soon identified as a Bronze Age warrior, nothing more than an archaeological curiosity. Yet Nathan starts to have terrifying visions of the students. Then Olivia reappears, half-mad and willing to go to any lengths to return the corpse to the earth. For he is the only thing keeping a terrible evil at bay...