The Dunwich Horror is a 1970 American supernatural horror film directed by Daniel Haller, and starring Sandra Dee, Dean Stockwell, and Ed Begley. A loose adaptation of the novella of the same name by H. P. Lovecraft, the film concerns a young female graduate student who is targeted by a man attempting to use her in an occult ritual taken from the Necronomicon. The screenplay was co-written by Curtis Hanson, while Roger Corman served as an executive producer on the film.