"Call me the Puppeteer." Young Zoe - homebound and bored - is fascinated by the strange woman who lives across the hall, even more so when she finds her collection of masks and guns. But curiosity is never a good idea when the vigilante-medium Hollow Girl is your neighbour, and Zoe is about to bear witness to terror beyond belief. Because when someone becomes an open door for the dead, they can't always control who or what comes through.