Most Similar Movies to Someone's Knocking at the Door (2009)
If you are looking for movies like Someone's Knocking at the Door (2009), you might like movies tagged with keyword : couple, serial killer, suspenseful, medical school, drugs, rape, pursuit, 1970s .
The Den (2013), Psycho III (1986), Donkey Punch (2008), The Confessional (1975), Cat People (1982), Cherry Falls (2000), Blood Feast (1963) ... Let's take a look at the following list...

The Den (2013)
While studying the habits of web cam chat users from the apparent safety of her own home, a young woman's life begins to spiral out of control after witnessing a grisly murder online.
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Psycho III (1986)
Norman Bates falls in love with a fallen nun who stays at the Bates Motel alongside a drifter and a curious reporter. Meanwhile, "mother" is still watching.
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Donkey Punch (2008)
Things go drastically wrong for a group of British holidaymakers in Spain.
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The Confessional (1975)
A troubled young girl goes to confession at the local church. Unfortunately, the sexually frustrated priest she confesses to becomes obsessed with her. At first, the priest stalks the girl, but later it is revealed that he will stop at nothing, including blackmail and murder, just to get close to her.
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Cat People (1982)
A young woman's sexual awakening brings horror when she discovers her urges transform her into a monstrous black leopard.
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Cherry Falls (2000)
In the small town of Cherry Falls, a psychotic murderer is killing off the virgins of the local high school.
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Blood Feast (1963)
An Egyptian caterer kills various women in suburban Miami to use their body parts to revive a dormant Egyptian goddess while an inept police detective tries to track him down.
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The Stepfather (1987)
After murdering his entire family, a man marries a widow with a teenage daughter in another town and prepares to do it all over again.
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I Spit on Your Grave (2010)
A writer who is brutalized during her cabin retreat seeks revenge on her attackers, who left her for dead.
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2001 Maniacs: Field of Screams (2010)
When this year's round of unsuspecting Northerners fail to show up for their annual Guts N' Glory Jamboree, the residents of Pleasant Valley take their cannibalistic carnival on the road, and head to Iowa, where they encounter spoiled heiresses Rome and Tina Sheraton, and the cast and crew of their "Road Rascals" reality show. Performing "The Bloodiest Show on Earth",...Read all
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Dr. Giggles (1992)
A madman who believes he's a doctor comes to the town where his crazy father was killed, and soon begins murdering people and becoming infatuated with a teenage girl who has a heart condition.
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The Tripper (2006)
A Ronald Reagan-obsessed serial killer targets a bunch of hippies who are heading to a weekend-long concert.
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Steel and Lace (1990)
A rape victim returns from the dead to seek vengeance on her rapists in this gory horror film.
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Tattoo (2002)
Two mismatched policemen (August Diehl, Christian Redl) search for a serial killer who has a fondness for tattooed skin.
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The Entity (1982)
A woman is tormented and sexually molested by an invisible demon.
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The Last House on the Left (2009)
After kidnapping and brutally assaulting two young women, a gang unknowingly finds refuge at a vacation home belonging to the parents of one of the victims: a mother and father who devise an increasingly gruesome series of revenge tactics.
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The Signal (2007)
A horror film told in three parts, from three perspectives, in which a mysterious transmission that turns people into killers invades every cell phone, radio, and television.
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H6: Diary of a Serial Killer (2005)
Released from prison, a disturbed man (Fernando Acaso) keeps a diary about the victims he tortures and murders.
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