THE HAUNTER OF THE DARK is a Cthulhu Mythos story, written in November 1935 and first published in the December 1936 issue of Weird Tales. It is notable for being Lovecraft’s final major work of fiction and serves as a sequel of sorts to Robert Bloch’s earlier story The Shambler from the Stars.

The tale follows Robert Blake, a writer with an interest in the occult, who becomes fascinated by a sinister, abandoned church on Federal Hill in Providence, Rhode Island. Inside, he discovers relics of a forgotten cult known as the Church of Starry Wisdom, including a strange artifact called the Shining Trapezohedron—a window into other realms that can summon a terrifying entity known only as the Haunter of the Dark.