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Demons of the Mind (1972)

R | | Horror, Thriller | May 1974 (USA)
2:57 | Trailer

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A physician discovers that two children are being kept virtually imprisoned in their house by their father. He investigates, and discovers a web of sex, incest and satanic possession.



(screenplay), (from an original story by) | 1 more credit »



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Cast overview, first billed only:
Gillian Hills ...
Paul Jones ...
Carl Richter
Patrick Magee ...
Kenneth J. Warren ...
Virginia Wetherell ...
Deirdre Costello ...
Sidonie Bond ...
Zorn's Wife
Thomas Heathcote ...
John Atkinson ...
1st Villager


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Plot Summary | Add Synopsis

Plot Keywords:

blood | insanity | castle | death | incest | See All (29) »


They came to torture an agonised mind


Horror | Thriller


R | See all certifications »

Parents Guide:





Release Date:

May 1974 (USA)  »

Also Known As:

Blood Evil  »

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

(RCA Sound System)



Aspect Ratio:

1.85 : 1
See  »

Did You Know?


Robert Hardy replaced Eric Porter who withdrew from the movie to film Hands of the Ripper (1971) which was made simultaneously. See more »


Carl: This man may be a genius, but you ought to know... he's a fraud.
Falkenberg: It isn't me that's discredited, it's any new ideas... you might as well kill them!
See more »


Referenced in Inside the Tower (2015) See more »

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User Reviews

Intelligent and entertaining Gothic thriller.
20 May 2003 | by (Ohio, USA) – See all my reviews

A mad baron (Robert Hardy), haunted by memories of driving his wife insane, is obsessed with the "heritage of disorder" that he thinks might afflict his two grown children (Gillian Hills and Shane Briant), whom he keeps locked up in his beautiful castle home, searching for a "cure." With the help of bald manservant Klaas (Kenneth J. Warren) and stern aunt Hilda (Yvonne Mitchell), he drains their blood to keep them weak, forbids them to see each other (there's incest involved) and ignores the expert opinions of a doctor (Patrick Magee). Meanwhile, there's a rapist/murderer on the loose terrorizing a quaint neighboring village.

This psychological horror story is a fine deviation from Hammer's cycle of monster movies, highlighted by excellent period costumes and sets (especially the castle) and Christopher Wicking's provocative, complex screenplay (which resembles V.C. Andrews' FLOWERS IN THE ATTIC, written later). Only the finale, with a mob of torch-carrying villagers hunting Hardy down a la FRANKENSTEIN, really detracts from this well above par Hammer production.

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