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 The film was originally made in 1967 by Dennis Muren as The Equinox: Journey into the Supernatural.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.
Edward Connell
David Fielding
Barbara Hewitt
Susan Turner
Frank Bonner
Jim Hudson
Robin Christopher
Vicki
James Phillips
Reporter Sloan
Patrick Burke
Doctor Branson
Sharon Gray
Nurse
Louis Clayton
Old man in cave
Norvelle Brooks
Irving L. Lichtenstein
James Dwion
The Orderly
Forrest J. Ackerman
Doctor on Tape Recorder (voice) (uncredited)
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