Curse of the Crimson Altar

Curse of the Crimson Altar (1970)

"Come face to face with naked fear on the altar of evil!"
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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.

Vernon Sewell
Christopher Leeas J.D. Morley
Boris Karloffas Professor John Marsh
Mark Edenas Robert Manning