When Edward Derby, a timid scholar of the occult, marries the mysterious Asenath Waite of Innsmouth, his friend Daniel Upton begins to notice disturbing changes in him. As Edward becomes increasingly erratic and withdrawn, Upton uncovers a terrifying truth about possession, forbidden sorcery, and the fragility of identity. In a chilling climax, he must confront the unspeakable horror that lies... on the doorstep.
