Watch Enter the Devil (1972) full hd online Directed by Frank Q. Dobbs. With Joshua Bryant, Irene Kelly, David S. Cass Sr., John Martin. Enter the Devil is a great American-made B horror movie. People are disappearing in the wastelands. An occult researcher discovers that a devil-worshipping cult is responsible. Her inquiries lead her into great danger. Who can she trust? Very well acted by a cast of unknowns. Gritty and atmospheric. Color, 16mm.