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.
Curse of the Crimson Altar is a 1968 British horror film directed by Vernon Sewell and starring Christopher Lee, Boris Karloff, Barbara Steele and Mark Eden. The film was produced by Louis M. Heyward for Tigon British Film Productions. The screenplay, by Doctor Who writers Mervyn Haisman and Henry Lincoln, was based (uncredited) on the short story "The Dreams in the Witch House" by H. P. Lovecraft. This film also featured the final British film appearance of Karloff.
