Equinox (1970)
David Fielding (Edward Connell), an inmate in a mental institution, becomes agitated and sure that he will die, as it has been a year and a day since his friends disappeared with him while on a picnic to find their lost professor. It turns out Dr. Arthur Waterman (Fritz Lieber, Jr.) was fiddling around with some magical forces, and as David, his girlfriend Susan (Barbara Hewitt), friend Jim (Frank Bonner) and his girlfriend Vicki (Robin Christopher) arrive they find the professor's house smashed to bits. They are directed by a tape recording to head out to a state park, where they run into a forest ranger (Jack Woods) with the unlikely name of Asmodeus. Hearing a voice from a cave, and thinking it may be Waterman, they investigate, finding an old man guarding an ancient book, which he hands over to them, glad to be rid of it. It turns out that Waterman at some point was also in possession of the book and, using notes he made, the friends translate it. Waterman's ...