The Other Side of Midnight

Life has been a nightmare for Mitya ever since he was arrested on trumped-up charges and exiled to Siberia. But this labor camp in the far north of Magadan Oblast hides a secret far more terrible than the merely human evils of the Great Terror. For the universe we know is not the only one, and there are places where it interpenetrates with universes where the laws of nature as we know them do not operate, where humanity has no place.
Worlds inhabited by beings ancient and terrible, to whom humanity are slaves, playthings, food.