Curse of the Crimson Altar (1968)

Director: Vernon Sewell
Cast: Barbara Steele, Boris Karloff, Christopher Lee, Mark Eden, Michael Gough, Michael Warren, Roger Avon, Virginia Wetherell

Synopsis:

When his brother disappears, Robert Manning pays a visit to the remote country house he was last heard from. While his host is outwardly welcoming – and his niece more demonstrably so – Manning detects a feeling of menace in the air with the legend of Lavinia Morley, Black Witch of Greymarsh, hanging over everything.