In the shadow-haunted streets of Salem, a writer named Carson rents a crumbling old house to finish his next novel. But the strange scratching in the cellar walls leads him to a hidden chamber—the fabled Witch Room of Abigail Prinn, a 17th-century sorceress whose name still chills the locals. Within its mosaic-lined floor and lightless black stone, something ancient stirs... something that whispers from beyond the gulf between matter and thought. As Carson's nights become filled with unremembered dreams and his will begins to slip, an occultist named Michael Leigh warns of a cosmic horror known as Nyogtha—the Dweller in Darkness—straining to breach the world through Carson himself.

First published in Weird Tales in May 1937, Henry Kuttner's pulp classic blends New England witchcraft, cosmic dread, and the fevered paranoia of Lovecraftian horror. This is a tale of an undead witch's vengeance, an inhuman god's awakening, and one man's descent into a nightmare from which there may be no escape.