With Michael Gough, Barbara Steele, Christopher Lee, Mark Eden, Boris Karloff, Rupert Davies, Virginia Wetherell, Rosemarie Reede
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 film was cut and released as The Crimson Cult in the United States. It is based on the short story "The Dreams in the Witch House" by H. P. Lovecraft. This film also featured the final appearance of horror heavyweight Karloff.