Behind Locked Doors

Name: Behind Locked Doors
Director: Charles Romine
Genre: Horror
Released: 1968-12-11
Rating: 3.0
Cast: Joyce Danner, Daniel Garth, Eve Reeves, Ivan Agar, Irene Lawrence

“What Was the Terrifying Secret of the Cellar?”

Terry and Ann are two "swingers" who spend the night in a spooky old house, where they're subjected to bizarre sexual experiments by Mr Bradley and his deranged sister.