Released January 14, 1970
Based on the H. P. Lovecraft story, the tag-line of the poster gives the best spoiler-free synopsis: a few years ago in Dunwich a half-witted girl bore illegitimate twins. One of them was almost human!
Dean Stockwell plays Wilbur Whateley in the 1970 movie and returned in the 2007 made-for-TV remake as Dr. Armitage.
For any Fallout fans, there’s a nod to the Lovecraftian classic in the form of a business office in Fallout 3 and an excavation site in Fallout 4 belonging to Dunwich Borers LLC. Both locations include supernatural elements such as hallucinated flashbacks, objects moving independently, and deep earth-moving rumbling.