Satan's Mistress

The intense loneliness of a woman in a loveless marriage awakens an evil spirit which seduces her, and causes havoc in the family's home. A really tame and boring horror flick that takes forever building up a "scary" atmosphere with black cats and creepy piano music, before delivering a crushingly limp finale involving a weak fire stunt and John Carradine spouting gibberish about faith. Two deaths, zero gore, waste of time.