Lilith's Hell

Suggestions:

La terrible bestia sangrienta Gorilla at Large Nightmare Violence in Cold Blood Another Son of Sam

A pair of filmmakers work with Ruggero Deodato, to pull off a horror film based on realism. The producers' family house, where the film is to be shot turns out to have it's own secrets. Secret chambers and ritualistic ceremonies invoking the spirit of Lillith. She who was cursed by God for not obeying Adam in the Garden of Eden.