Behind Locked Doors (1968)
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.
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.