The Incubus

In a small Wisconsin town, a mysterious figure is raping and murdering young women. Dr. Sam Cordell (John Cassavetes) discovers that the victims have similar wounds and finds an inexplicably large amount of semen in their vaginas. As the investigation unfolds, Sheriff Hank Walden questions Sam about the case, while Laura Kincaid, a nosy local reporter, arrives to question Walden, who forces her to leave. A teenage boy, Tim Galen, experiences recurring nightmares that may be connected to the murders, and his grandmother, Agatha Galen, tries to dissuade him of his suspicions.