The Lurker At The Threshold

The Lurker at the Threshold is August Derleth's 1945 'posthumous collaboration' with H. P. Lovecraft, the first novel Derleth assembled from Lovecraft's unfinished fragments after Lovecraft's 1937 death. The framework comes from two short Lovecraft notes (a hundred-word scrap on a wizard ancestor and a half-page on a Massachusetts witch). Derleth built a 200-page Mythos novel around them.

The result is one of the cleaner Derleth-Lovecraft 'posthumous collaborations,' partly because so little of the actual prose is Lovecraft's and partly because Derleth was a fluent enough imitator that the seams do not show as much as in the later collaborations. The Billington's Wood setting is fully developed, the cosmic-horror set pieces land, and the novel works as one of the best entries in the wider Mythos canon.

Recommended for Lovecraft completists, for cosmic-horror fans (Ramsey Campbell's Mythos work, Brian Lumley's Titus Crow series), and for readers looking for books like The Lurker at the Threshold in the post-Lovecraft Mythos tradition. Four stars, with the understanding that this is more Derleth than Lovecraft.