Summary
Six scientists arrive at the creepy Headstone Manor to investigate a strange phenomena which was the site of a mysterious massacre years earlier where 18 guests were killed in one night. It turns out that the house is the place of a satanic cult lead by a sinister monk who plans to kill the scientists who are inhabiting this house of Satan.
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Cast
Kenny Everett
Dr. Lukas Mandeville
Pamela Stephenson
Dr. Barbara Coyle
Vincent Price
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Gareth Hunt
Elliot Broome
Don Warrington
Stephen Wilson
John Fortune
John Harrison
Sheila Steafel
Sheila Finch
John Stephen Hill
Henry Noland
Cleo Rocos
Deborah Kedding
Graham Stark
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Pat Ashton
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David Lodge
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Debbie Linden
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Oscar Quitak
Doctor
Barry Cryer
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Gordon Rollings
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