Thehorrorgenre has been a favorite among cinema-goers for decades, and it has really exploded over the past couple of years, with entire franchises and interconnected universes popping up left and right. We now have theConjuringuniverse and theNightmare of Elm Streetfranchise, and of course, the most prolific of all - theHalloween/Screamuniverse.

While sequences are known to be fun and impressive and usually lend a hand in upping the ante, some horror movies work best as chilling standalone films. Movies that have the potential to deliver such a terrifying, disturbing punch in just one viewing that any sequel would only cheapen the experience. These are the kinds of horror films that haunt your dreams without needing a sequel to continue scaring you.

Donald Sutherland in Don’t Look Now (1973).

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Imagine being deeply unnerved by a horror flick and being left with a weird feeling in the pit of your stomach that stays with you for days. Now consider if that movie got several unnecessary sequels or expanded an entire universe,impatiently trying to top itself with more over-the-top scaresand gore until the fright factor fades and only camp remains. The impact would be lost.

But that’s not the case with all the movies on this list. Some leave room for the story to expand, for the characters to meet new challenges, and for the dread to persist. However, the mood-building atmospherics of these films are simply exquisite. They know that less is more, and the biggest scares sit in the spaces between what’s shown on screen and what’s left to the imagination. So, let’s dive in and take a look at some of the most frightening horror movies with no sequels.

Invasion of the Body Snatchers 1978

20Don’t Look Now (1973)

While some audience scoffs at people performing supernatural practices in movies, others shudder.Don’t Look Nowdoesn’t give you a choice as it bends your senses and remains relentlessly disturbing throughout. The movie follows a couple struggling to deal with the trauma of losing their little daughter. They move to Venice, Italy, for a change in scenery. There, the mother meets two sisters who claim to know how to access their daughter’s spirit.

The couple does not take them seriously until their new surroundings show them something unreal. The film builds a sense of paranoia that continues to grow as the lines between reality and delusion become terrifyingly blurred.A classic among standalone,Don’t Look Nowis one unforgettable movie.

Braindead

19Invasion Of The Body Snatchers (1978)

The movie, while being a remake of the 1956 classic, remains one of the most compelling horror movies of the ‘70s. Set in San Francisco,Invasion of the Body Snatchersfollows Sanitary Inspector Matthew Bennell as he discovers that people are disappearing and being replaced by imposters – who are ultimately sinister pod people with a hive mind. The few remaining humans hide in plain sight, desperately trying to figure out how to stop the invasion before they’re all replaced.

The movieslowly dissects the McCarthy-era fears of rebellionand uses it as a metaphor for the horrors it crafted into people’s minds. It takes a science fiction premise and delivers a startling and horrific social commentary that is hard to replicate.

The Faculty

Braindeadis a splatterfest delight for fans who are gorehounds and the ghoulishly comedic at heart. And there’s a lot of us. Directed by Peter Jackson, the 1992 classic follows a doting mother, Vera Cosgrove, as she gets bitten by a Sumatran rat monkey and turns into a zombie. Scared of what she might be capable of doing, her son, Lionel locks her up in the basement. But she escapes and starts turning the neighbors into man-eating maniacs, and the horde goes on a hilarious and horrific killing spree.

The movie isas ridiculous and creepy as zombie moviesare. With an over-the-top romp, slasher tropes, maddening comedy, and gory visuals,Braindeadstays insanely memorable for all the wrong reasons.

Malcolm and Cole from The Sixth Sense

17The Faculty (1998)

Led by a young Elijah Wood,The Facultyis a fantastic teen thriller revolving around alien abduction. The 1998 movie does wonders in posing disturbing questions about reality and deception. The story follows Herrington High School’s group of rebellious students who suspect that their teachers have been replaced by murderous impersonators. Science fiction and slasher come together as one of the students witnesses the said possessions, and the spiral that follows is haunting as ever. Is this all in their heads, or are they slowly being picked off one by one? With teen horrors liketheScreamfranchiseandThe Blair Witch Projectdominating the ‘90s,The Facultystands its own as a smart and creepy alien invasion horror.

16The Sixth Sense (1999)

The Sixth Sensefeatures Bruce Willis as a child psychologist named Dr. Malcolm Crowe, who helps a haunted child named Cole cope with his psychic torments. But the catch here is that he is also harboring a psychic torment of his own. In exchange for helping Cole, Malcolm hopes to mend his relationship with his wife. The psychological shocker is all the more frightening for how grounded and believable it feels. That is, until the atmosphere builds into a jaw-dropping reveal. Toni Collette and Haley Joel Osment are incredible in their role. Moreover, the movie’s iconic ending has now become a legend, proving just how well it works as a standalone.

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15Sleepy Hollow (1999)

Set in the haunting atmosphere of 1799,Sleepy Hollowbrings Washington Irving’s chilling novella and the story of the Headless Horseman of to the big screen. Johnny Depp stars as Ichabod Crane, a humble investigator who helps solve a series of gruesome decapitations in a small town. Starting with the townspeople describing the murderer to be a headless entity and entering the spooky world of shadows and creepy mythology, the movie retells the horrid tale with finesse. Directed by Tim Burton at his most Gothic, it’s a magnificent and menacing movie that never really was revisited by the duo.

14Behind the Mask: The Rise of Leslie Vernon (2006)

When a movie is so deeply driven by its plot, it deconstructs the trope to the point where it’s not only dark but unpalatable; it’s given the movie is going to be great.Behind the Mask: The Rise of Leslie Vernonbrings self-awareness to slasher films. The protagonist Leslie Vernon, played by Nathan Baesel, is obsessed with the greatest horror heroes like Michael Myers and Freddie Krueger. And while he prepares to shoot his latest gory action, he calls up a young documentary crew to follow him around. There are hints that this whole thing may not be what it seems, but never once would you think of this as an origin story. As the layers of fiction and reality blur, it is hard not to freak out. The movie is a clever and campy look at slasher convention that continues to deliver the creeps.

13Let the Right One In (2008)

Let the Right One Inis a foreign-language horror romance. Set in the 1980s suburbia, it follows a bullied boy who finds solace and friendship with a mysterious girl who lives next door. But she has a secret – she’s a vampire, doomed to walk the earth forever. Although horrifying, Oskar continues to hang out with Eli, and they form a deep bond; their love gradually unfolds against the backdrop of horror. The young actors Kare Hedebrant and Lina Leandersson are incredible in their roles. The movie, with all its poetic romance, is a beautifully made, deeply haunting, and imaginative reimagining of the vampire mythos that stays with you.

12I Saw the Devil (2010)

South Korean horror movies are known to never hold back on the gore and bloodshed. AndI Saw The Devil, is a serial killer thriller with a disturbing twist. Directed by Kim Jee-woon, the movie follows a secret agent trying to catch a notorious serial killer who brutally murdered his fiancé. When he does, he beats him up and lets him go, starting a devilish game of chasing one another. In the whole process, the agent becomes almost as ruthless and cruel as the killer. The movie relies heavily on psychological scares and unsettling scenes rather than actual, creepy ones. It is dark and grim and profoundly unnerving to watch the moral darkness of a man turn him into a devil.

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11The Crazies (2010)

The Craziesis based on George Romero’s 1973 story of the same name. A criminally underrated survival horror, the movie portrays a violent virus that has infected a small town, and all the residents have turned into raging psychotics. The only people left untouched are Sheriff David Dutton and his wife, and two strangers. As they try to claw their way out of this dreadful situation, the atmosphere becomes tense and claustrophobic. There are infected ‘crazies’ roaming the streets and danger lurking at every turn. Overall, the movie is intense, and the fright gradually increases into a chaos that seems inescapable. With that said, the ending does leave room for a continuation, but a sequel has never happened.