The Lurking Fear is a horror short story by H. P. Lovecraft, written in 1922 and first published in 1923. It is one of Lovecraft's early works, blending gothic horror with his developing themes of hidden degeneration and lurking, unseen terror. The story is narrated by an unnamed investigator who explores a series of mysterious deaths in the remote Catskill Mountains of New York. Local legend speaks of a "lurking fear" in the area, especially around an abandoned and decaying mansion associated with the Martense family. As the narrator investigates, he discovers that members of the long-isolated Martense family have undergone grotesque degeneration after generations of inbreeding and seclusion. They are revealed to live in underground tunnels beneath the estate, emerging only at night to attack travelers. The horror builds through a series of encounters in dark, stormy, and claustrophobic settings, emphasizing decay, isolation, and ancestral corruption rather than overt supernatural monsters in the traditional sense.