Due to their possession of an ancient mystic book, four friends are attacked by a demon while on a picnic and find themselves pitched into a world of evil that overlaps their own. The film was originally made in 1967 by Dennis Muren as The Equinox: Journey into the Supernatural. Jack Woods was hired to shoot additional footage and expand on Muren's work.
as David Fielding (as Skip Shimer)
as Susan Turner
as Asmodeus
as Jim Hudson (as Frank Boers Jr.)
as Vicki (as Robin Snider)
as Reporter Sloan (as Jim Phillips)
as Dr. Arthur Watermann (as Fritz Leiber)
as Doctor Branson
as Nurse
as Old man in cave
as The Orderly
as Doctor on Tape Recorder (voice) (uncredited)
as Detective Harrison (uncredited)
as Reporter Sloan (voice) (uncredited)
as The Green Giant