"Don't you know this house is cursed? You are cursed, and Edward's cursed, and everybody's cursed."
In Elizabethan England, the thoroughly unlikable Lord Edward Whitman (Vincent Price) earns the emnity of Oona (Elisabeth Bergner), the leader of a coven of witches, when he has her coven killed. In retaliation she calls forth a demon bent on exacting revenge on the Whitman family.
Treading a similar path as Witchfinder General, with Price playing a familiar character, and having a fine time doing so, hamming it up with aplomb. His prescence lifts a mundaine suspence piece up a level.