Equinox
(1970)
Four friends are attacked by a demon while on a picnic, due to possession of a tome of mystic information, and find themselves pitched into a world of evil that overlaps our own.
Directed by:
Jack Woods, Dennis Muren
Starring:
Edward Connell, Barbara Hewitt, Jack Woods, Frank Bonner, Robin Christopher, James Phillips
Links:
IMDb, Movie posters, Movie stills