The people of Gokroth live in fear of the monsters in the forest. Creatures with scales and fur, teeth and claws. But worse than these, perhaps, is the strange doctor who does unspeakable, unholy work in the high castle on the mountain… A doctor who’s about to receive a visit from an off-worlder. Mags, formerly of the Psychic Circus. A native of the planet Vulpana… with a monstrous secret of her own.