After some distributors found Lisa and the devil too mystifying for release, producer Alfredo Leone (with Bava's uncredited assistance) hired veteran actor Robert Alda, shot additional scenes, and transformed Lisa into The house of exorcism, capitalizing on the popularity of demon possession films. While sharing much of the same material, the films have come to be looked upon as two distinct entities, beautifully illuminating the stylistic diversity...

John Form has found the perfect gift for his expectant wife, Mia. He gives her a beautiful, rare vintage doll in a pure white wedding dress. But Mia's delight with Annabelle doesn't last long. On one horrific night, their home is invaded by members of a satanic cult, who violently attack the couple. Spilled blood and terror are not all they leave behind.

New York police officer Ralph Sarchie, struggling with his own personal issues, begins investigating a series of disturbing and inexplicable crimes. He joins forces with an unconventional priest, schooled in the rituals of exorcism, to combat the frightening and demonic possessions that are terrorizing their city. Based upon the book which details Sarchie's bone-chilling real-life cases.