Most Similar Movies to Who Slew Auntie Roo? (1972)
If you are looking for movies like Who Slew Auntie Roo? (1972), you might like movies tagged with keyword : horror, thriller, mystery, psychological horror, gothic, dark fairy tale, child's perspective, family secrets, murder, insanity, revenge, british film, 1970s, classic horror, cult film, black comedy, orphans, kidnapping, madness, supernatural elements .
Torture Garden (1967), Tales That Witness Madness (1973), The Shuttered Room (1967), Dementia 13 (1963), Frightmare (1974), Bedlam (1946), Die! Die! My Darling! (1965) ... Let's take a look at the following list...

Torture Garden (1967)
An anthology of four short horror stories about people who visit Dr. Diabolo's fairground haunted-house attraction show.
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Tales That Witness Madness (1973)
A psychiatrist tells stories of four special cases to a colleague.
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The Shuttered Room (1967)
A series of horrific murders is traced to a creature that inhabits a very strange house.
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Dementia 13 (1963)
Shocked by the death of her spouse, a scheming widow hatches a bold plan to get her hands on the inheritance, unaware that she is targeted by an axe-wielding murderer who lurks in the family's estate. What mystery shrouds the noble house?
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Frightmare (1974)
Two decades ago, Edmund (Rupert Davies) and Dorothy Yates (Sheila Keith) were placed in an insane asylum after it was proven they were cannibals who'd killed and eaten six people. Now they've been set free, and their put-upon daughter, Jackie (Deborah Fairfax), is beginning to suspect that they may not have been entirely reformed. As various young people start to disappear from the area around her parents' cabin, she and her boyfriend (Paul Greenwood) begin looking for evidence.
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Bedlam (1946)
Nell Bowen, the protégé of Lord Mortimer, wants to help change the conditions of notorious St. Mary's of Bethlehem Asylum (Bedlam). Though she tries to reform Bedlam, but the cruel Master Sims who runs it has her committed there, though ultimate, it's the lunatics who've taken over the asylum.
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Die! Die! My Darling! (1965)
A young woman is terrorized by her deceased fiancé's demented mother who blames her for her son's death.
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The Black Torment (1964)
Sir Richard (John Turner) and his second wife (Heather Sears) hear of 18th-century evil done by someone who looks like Sir Richard.
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The Ghoul (1933)
An Egyptologist returns from the dead to take revenge on those who have violated his tomb.
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Night of Dark Shadows (1971)
A painter and his wife move into a home and find themselves plagued by ghosts and spirits of his ancestors that used to be witches.
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Sisters (1973)
A newswoman (Jennifer Salt) and a private eye (Charles Durning) probe a murder confused by separated Siamese twins (Margot Kidder).
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The Attic Expeditions (2001)
An amnesiac awakens in an asylum for the criminally insane and must find answers as those around him die one by one.
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Das Cabinet des Dr. Caligari (1920)
Hypnotist Dr. Caligari uses a somnambulist, Cesare, to commit murders.
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Dementia 13 (2017)
At a wealthy family estate, extortionists go after their matriarch and her inheritance while a ghost and and ax-wielding figure lurk in the shadows.
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Suspiria (1977)
An American newcomer to a prestigious German ballet academy comes to realize that the school is a front for something sinister amid a series of grisly murders.
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Scream of Fear (1961)
A wheelchair-bound young woman returns to her father's estate after ten years, and although she's told he's away, she keeps seeing his dead body on the estate.
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Theatre of Blood (1973)
A Shakespearean actor takes poetic revenge on the critics who denied him recognition.
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Pit and the Pendulum (1961)
In the sixteenth century, Francis Barnard travels to Spain to clarify the strange circumstances of his sister's death after she had married the son of a cruel Spanish Inquisitor.
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