Of Unknown OriginMovies like Of Unknown Origin
- Key Features:
- Obsession, Man vs. nature, Horror, Home invasion, Psychological thriller, Rebuilding, Survival
- Tone:
- serious, gritty, suspense-driven
- Target Audience:
- Horror fans, Thriller enthusiasts, Urban dwellers, Psychological horror aficionados
- Emotional Arc:
- Annoyance → Obsession → Terror
Of Unknown Origin

A man who recently completed rebuilding a townhouse becomes obsessed with a rat infestation until it becomes an interspecies duel.
Of Unknown Origin
A deadly infection breaks out in Manhattan, causing humans to devolve into blood-thirsty rat creatures. Six recently evicted tenants must survive the night and protect their downtown apartment building as the city quickly spirals out of control.

Desperate for companionship, the repressed Willard befriends a group of rats that inhabit his late father's deteriorating mansion. In these furry creatures, Willard finds temporary refuge from daily abuse at the hands of his bedridden mother and his father's old partner, Frank. Soon it becomes clear that the brood of rodents is ready and willing to exact a vicious, deadly revenge on anyone who dares to bully their sensitive new master.

A lonely boy becomes good friends with Ben, a rat. This rat is also the leader of a pack of vicious killer rats, killing lots of people.

A rash of bizarre murders in New York City seems to point to a group of grotesquely deformed vagrants living in the sewers. A courageous policeman, a photojournalist and his girlfriend, and a nutty bum, who seems to know a lot about the creatures, band together to try and determine what the creatures are and how to stop them.

Residents of a rundown French apartment building battle against an army of deadly, rapidly reproducing spiders.

In Madrid, Spain, a mysterious serial killer ruthlessly murders his victims by recreating the first appearance of several comic book superheroes. Cosme, a veteran police inspector who is about to retire, works on the case along with the tormented inspector David Valentín and his own son Jorge Elías, a nerdy young man who owns a comic book store.

A stately home robbery takes an evil turn one night when a gang of young thieves are caught by the owners of the house and then hunted across the estate for the proprietor's entertainment.

Mercer's brother, an amateur pilot, crashes on an island and is killed by a giant spider. A year later, when Mercer goes in search of him, she discovers a breed of poisonous arachnids ready to attack.

A disease carried by common cockroaches is killing Manhattan children. In an effort to stop the epidemic an entomologist, Susan Tyler, creates a mutant breed of insect that secretes a fluid to kill the roaches. This mutant breed was engineered to die after one generation, but three years later Susan finds out that the species has survived and evolved into a large, gruesome monster that can mimic human form.

A priest-doctor chasing a man with supernatural regenerative abilities, who has recently escaped from a medical lab, reaches a small town where the mutant goes on a killing spree.

A man bumps into an old crush and becomes obsessed. After several failed attempts at winning her over, he kidnaps her and holds her captive underneath the animal shelter where he works.

Newlywed Jennifer is brutally attacked at a dark rest stop. While healing from her injuries, she can’t recall anything from her past, including the ordeal. Her husband, Russell , is just thankful she’s alive and eager to get her home. As he reintroduces her to their secluded mountain estate, Detective Page pursues Jennifer’s assailant — his own daughter went missing and was never found. The same fate now awaits Jennifer, unless someone realizes that her loving caretaker is actually her captor.

A violent electrical storm topples power lines into the rain soaked earth that is home for an aggressive breed of worms. The high voltage causes the worms to mutate into larger, hostile hordes of man-eating worms that lie in wait for the residents of Fly Creek.

Five Army deserters wander the post-apocalyptic, post-industrial LA landscape seeking shelter from an increasingly toxic environment and poisonous rain.

Tourists take a boat to a remote island, where they find that most of the people have disappeared, and something is stalking them. They find a hidden room in the big mansion on a hill, and an ancient diary, which gives them clues to the source of the terror.

A large spider from the jungles of South America is accidentally transported in a crate with a dead body to America where it mates with a local spider. Soon after, the residents of a small California town disappear as the result of spider bites from the deadly spider offspring. It's up to a couple of doctors with the help of an insect exterminator to annihilate these eight legged freaks.

Anna suffers from agoraphobia so crippling that when a trio of criminals break into her house, she cannot bring herself to flee. But what the intruders don't realize is that agoraphobia is not her only psychosis.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

After years of separation, Irena Gallier and her minister brother, Paul, reunite in New Orleans. When zoologists capture a wild panther, Irena is drawn to the cat – and zoo curator Oliver to her. Soon, Paul will have to reveal the family secret: that when sexually aroused, they revert into predatory jungle cats.

Morgan and his friends are on a hunting trip on a remote Canadian island when they are attacked by a swarm of giant wasps. Looking for help, Morgan stumbles across a barn inhabited by an enormous killer chicken. After doing some exploring, they discover the entire island is crawling with animals that have somehow grown to giant size. The most dangerous of all of these, however, are the rats, who are mobilizing to do battle with the human intruders.

One hundred years after a nuclear war has devastated the planet, society has been reborn into two factions; the underground society and the scavangers above in the wastelands. A group of scavangers on bikes come across a town infested with flesh eating rats, and soon the gore is spilling everywhere.

When a Sumatran rat-monkey bites Lionel Cosgrove's mother, she's transformed into a zombie and begins killing (and transforming) the entire town while Lionel races to keep things under control.

Driven by biological excess, a young man and woman search for sexual fulfillment, unaware of each other's existence. Unfortunately, they eventually meet, and the bonding of these two very unusual human beings ends in an explosive and ultimately over-the-top sexual experience, resulting in a truly god awful love story....

In 1989, a breakthrough in "advanced parasitic research" on Cuttyhunk Island gave scientists a jump in human evolution. Initial tests proved promising, as subjects experienced heightened physical and mental strength and awareness. But - something in the experiment went horribly wrong, and the island mysteriously lost three quarters of its population.

Happily married Michael and Karen Carr call the police after Karen is held at knife point during a failed robbery attempt in their home. Before long, one of the responding officers, Officer Pete Davis, helps arrange the installation of a new security system, taking extra interest in the couple's case. As a result, the grateful Carrs invite him to stay for dinner and they strike up an unexpected friendship. However, as the lonely policeman develops an intense fixation on Karen, his take on friendship develops into a dangerous obsession soon becoming the Carrs' worst nightmare.

The local sheriff of Dead River, Maine, thought he had killed them off ten years ago -- a primitive, cave-dwelling tribe of cannibalistic savages. But somehow the clan survived. To breed. To hunt. To kill and eat. And now the peaceful residents of this isolated town are fighting for their lives...

An unexplained, local split in the atmosphere causes a series of total unpredictable, yet devastating tornadoes. Rookie fireman Brian Flynn gets trapped in the underground sewage with his girlfriend, deputy mayor James 'Jim' Lawrence and climatologist Dr. Cassie Lawrence's niece Lori. Mayor Leonardo of New York initially refuses to pay proper attention to the phenomenon, a 'reelection threat', so the alert status remains too low for long. Atypical lightning discovered inside tornadoes adds unprecedented dangers. The Lawrences and aeronautics renegade Dr. Lars Liggenhorn conceive a possible solution by launching rockets, but NASA's Dr. Quinn overrules them, imposing standard silver iodine.

A man with an unknown disease travels to an island with his girlfriend where his relatives once lived, hoping to find a cure to his illness. Although his relatives were all thought to be dead, he finds them living underground.

A man enclosed in a plastic bubble, his sister, and their best friend must defend an apartment complex from the mutant Judas Breed insects.

Horrifying shocker as a biological experiment goes haywire when meat-eating mutant roaches invade an island community, terrorizing a peaceful New England fishing village and hideously butchering its citizens.

A married man's one-night stand comes back to haunt him when that lover begins to stalk him and his family.

A baby alligator is flushed down a toilet and survives by eating discarded lab animals that have been injected with growth hormones. The now gigantic animal escapes the city sewers and goes on a rampage, pursued by a cop and a big-game hunter.

Young urban couple Ed and Sarah are set to begin a new life when they move from London into an isolated borders Scottish farmhouse. After falling in love with the 19th century Castle Farm and seeing its potential as a fixer-upper they are anxious to get started on the renovations. In bed on their first night Sarah thinks she can hear noises in the darkness but Ed is disbelieving saying it’s her imagination playing tricks. Persisting in her fear they are not alone in the house, she forces Ed to investigate. When he doesn’t return after a scarily long period, she goes downstairs to investigate only to be confronted by a welcoming committee of masked intruders. As she desperately searches for Ed, a terrifying game of cat and mouse ensues with the mysterious assailants. But what do they want and what horrors do they have planned for the two newcomers?

Brian comes under the addictive spell of a parasite with the ability to induce euphoric hallucinations in its hosts.

Fifteen years ago, five men were abducted by aliens. Only four returned. Now, these same four men have managed to capture one of the creatures who killed their friend and ruined their lives.

French nuclear tests irradiate an iguana into a giant monster that viciously attacks freighter ships in the Pacific Ocean. A team of experts, including Niko Tatopoulos, conclude that the oversized reptile is the culprit. Before long, the giant lizard is loose in Manhattan as the US military races to destroy the monster before it reproduces and it's spawn takes over the world.

The adventures of an upper-class suburban family abruptly confronted with the younger brother's discovery of his homosexuality, the elder sister's suicide attempt and sadomasochist tendencies, and the intrusion of a very free-spirited maid and her husband. And it all started with the arrival in the family of an innocent looking rat.

Desperate to repay his debt to his ex-wife, an ex-con plots a heist at his new employer's country home, unaware that a second criminal has also targeted the property, and rigged it with a series of deadly traps.

Having finally secured her first assignment from her family's demolition business, Sam Walczak is sent to supervise the destruction of an apartment house, only to discover a group of tenants still living in the condemned building. One such tenant, Jimmy, tells Sam an urban legend about a serial murderer who used to live in the building and entomb his victims in the walls. What's worse, the dead are believed to still harass the residents to this day.

Army radiation experiments awaken a subterranean monster from a fissure that feeds on energy and proceeds to terrorise a remote Scottish village. An American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.

After witnessing a brutal murder in a cabin, a man hides in a crawlspace while the killers scour the property for a hidden fortune. As they draw nearer, he must decide if the crawlspace will be his tomb or the battleground in his fight for survival.

People are dying mysteriously and gruesomely, and nobody has a clue what the cause is. Only health worker Mike Brady has a possible solution, but his theory of killer slugs is laughed at by the authorities. Only when the body count begins to rise and a slug expert from England begins snooping around does it begin to look like Mike had the right idea after all.

A group of friends emerge from the darkness, bloody and lucky to be alive. Having already lost two friends in the marsh, they break into an empty vacation house to take shelter. Whatever was in the marsh is still after them, but it's not the only thing that wants them dead. Something much worse and more savage lays in wait.

Chris crashes into a carload of other young people, and the group of stranded motorists is soon lost in the woods of West Virginia, where they're hunted by three cannibalistic mountain men who are grossly disfigured by generations of inbreeding.

As fanged, furious furballs viciously invade an L.A. apartment building and sink their teeth into the low-rent tenants, Josh leads the battle to beat back the conniving critters and save the planet.

Bok-Soon runs a street stall, cares for her younger sister, and is feared by many because of her quick temper. When Tae-Soo murders her sister, rage consumes her completely as she stalks the killer.

A New York City cop and an expert criminologist trying to solve a series of grisly deaths in which the victims have seemingly been maimed by feral animals discover a sinister connection between the crimes and an old legend.

An agoraphobic psychologist and a female detective must work together to take down a serial killer who copies serial killers from the past.

A thief makes a disturbing discovery in the house where he breaks in. Later, when he returns to the same house with his partner in crime, things are no longer how he expected.

After a model is brutally murdered on a Caribbean island, her sister's investigation uncovers a horrifying rat-like creature.

The depletion of the earth's ozone layer causes animals above the altitude of 5000 feet to run amok, which is very unfortunate for a group of hikers who get dropped off up there by helicopter just before the quarantine is announced.

Emma is a young and beautiful graduate student just starting a new life in New York City. Like most people her age, she is always connected - her phone and laptop are constant companions, documenting her most intimate moments. What she doesn't realize is that she's sharing her life with an uninvited and dangerous guest. A hacker is following Emma’s every move. When the voyeuristic thrill of watching her digitally isn't enough, the situation escalates to a dangerous and terrifying level.

A couple's relationship is tested when uninvited guests arrive at their home, disrupting their tranquil existence.

When a science experiment goes horribly wrong, gigantic fish gain appetites for human flesh.

Martin Durnley is a young man with an infantilizing mother, resentful stepfather and an institutionalized brother with Down's syndrome. To cope, he retreats into an alternate child personality he calls Georgie. After being caught during a theft attempt at a department store, he befriends a female customer who is sympathetic to him, but his friendship soon turns into obsession.

As the Keenans try to bring their family closer together, they unwittingly enter themselves into a game of life or death. With four deranged killers patrolling the halls of their hotel and competing for the most creative kills, the odds are definitely stacked against them.

A troubled woman living in an isolated community finds herself pulled between the control of her oppressive family and the allure of a secretive outsider suspected of a series of brutal murders.

Young babysitter Amanda arrives at the Lloyd residence to spend the evening looking after their young son. Soon after the Lloyds leave, a series of frightening occurrences in the gloomy old house have Amanda's nerves on edge. The real terror begins, however, when the child's biological father appears after recently escaping from a nearby mental institution.

A New York University professor returns from a rescue mission to the Amazon rainforest with the footage shot by a lost team of documentarians who were making a film about the area's local cannibal tribes.

Annie's life is in jeopardy after she's witnessed the horrific rape and murder of her closest friend. Fleeing from two attackers she stumbles across Kyle, a recluse living in the middle of the woods. Kyle finds the stillness of the woods comforting. The ruggedly handsome loner stays far from civilization - that is - until a single knock on his door throws his solitary life into chaos.

Desperate to save their marriage, a young couple takes a deal to move into their dream home, but disturbing events reveal the house's troubled history.

Down-on-their luck brothers, Lars and Ernie Smuntz, aren't happy with the crumbling old mansion they inherit... until they discover the estate is worth millions. Before they can cash in, they have to rid the house of its single, stubborn occupant—a tiny and tenacious mouse.

A zoo veterinarian gets caught up in a grisly adventure as she finds herself leading the city-wide hunt for a monstrous lion terrorizing the Dutch capital of Amsterdam.

A wealthy New Orleans businessman becomes obsessed with a young woman who resembles his late wife.

Cho-in has special powers that allow him to control everyone he can see, that is until he meets Kyu-nam, the only person he can't control. A series of events begins a confrontation that pushes both men to the brink.

Giant albino spiders break free from the depths of Earth in New Orleans, making everyone’s worst nightmare a reality.

A nurse taking care of her daughter's mysterious affliction struggles to hide her secrets when uninvited strangers take shelter in her house during a lethal blizzard.

When a huge hurricane hits her hometown in Florida, Haley ignores evacuation orders to look for her father. After finding him badly wounded, both are trapped by the flood. With virtually no time to escape the storm, they discover that rising water levels are the least of their problems.

When a notorious German serial killer is captured after committing some of the most heinous acts against humanity ever imaginable, a farmer and police officer from a sleepy rural community on the outskirts of Berlin is drawn into the case as he searches for the answers to a murder that has shaken his tight-knit community.

A group of young activists set out to make an environmental statement by vandalizing a home superstore as it closes. But their plan goes terribly wrong when they become trapped inside and must face a deranged security guard with a gruesome passion for primitive hunting. As the night fills with violence and terror, the teenagers find themselves in a desperate fight for their lives.

Five men wake up in a locked-down warehouse with no memory of who they are. They are forced to figure out who is good and who is bad to stay alive.

An oil company expedition disturbs the peace of a giant ape and brings him back to New York to exploit him.

When a man's best friend is killed on the streets of New York, he transforms into a violent killer, turning New York into a war zone.

A former astronaut helps a government agent and a police detective track the source of mysterious alien pod spores, filled with lethal flesh-dissolving acid, to a South American coffee plantation controlled by alien pod clones.

Unaware of its terrible history, a young couple purchases their dream home. But it soon becomes clear that they may not be alone in the house... and that someone -- or something -- is determined to drive them out.

Tony Washington is killed in a hit-and-run after saving the local bodega clerk from robbers. Molly Mokembe is a Haitian voodou practitioner who brings him back as a zombi from a debt owed by Tony's late dad in an act of sacrifice that saved her. Jimbo, the kid that iced Tony, is embracing some new sadistic feelings. What follows is a revenge that can only be sated once all of those who were with Jimbo that night have had their due.

A recently cheated on married woman falls for a younger man who has moved in next door, but their torrid affair soon takes a dangerous turn.

A medical examiner discovers that an innocent shooting victim in a robbery died of bubonic plague. With only 48 hours to find the killer, who is now a ticking time bomb threatening the entire city, a grisly manhunt through the seamy underworld of the New Orleans Waterfront is underway.

A bitter young man sets out to get back at the gangsters who murdered his father.

A super strain of genetically engineered mutants are designed to take over the universe, hungry to conquer the galaxy, with an appetite for mankind.

When strange lights descend on the city of Los Angeles, people are drawn outside like moths to a flame where an extraterrestrial force threatens to swallow the entire human population off the face of the Earth. Now the band of survivors must fight for their lives as the world unravels around them.

Rancher Cole Hillman is fed up of rabbits plaguing his fields. Zoologist Roy Bennett conducts an experiment to curb their population, but it gives rise to giant rabbits that terrorise the town.

Juliet, a beautiful doctor, has found the perfect New York apartment to start a new life after separating from her husband. It's got spacious rooms, a spectacular view, and a handy, handsome landlord. But there are secrets behind every wall and terror in every room as Juliet gets the unnerving feeling that she is not alone.

Alpha Male Smith and his Beta, Keith, move to take over a local community. They hook up with restless Female, Denise, igniting a deadly feud in which emotions run high and deep-seated grudges resurface amongst the tribe. Are we not men? Or are we simply beasts?

A psychological thriller based on the concept of anamorphosis, a painting technique that manipulates the laws of perspective to create two competing images on a single canvas.

A SWAT team transporting a vicious crime syndicate boss must fight their way out of a county detention center during a catastrophic alien invasion.

A man who poured his life savings into a new apartment discovers its walls are full of disturbing noises, hostile neighbors and unsettling secrets.

Trapped on a remote island by a hurricane, a group discover a doctor has been experimenting on creating half sized humans. Unfortunately, his experiments have also created giant shrews, who when they have run out of small animals to eat, turn on the humans.

Jennifer Conrad is a small-town girl starting over in the big city. Fleeing an abusive relationship, all she wants is a chance to begin again. But it is hard to start over when something is eating you while you sleep . . . one painful bite at a time.

Carnivorous aliens arrive unannounced at a Kansas family farm; two intergalactic bounty hunters soon follow, determined to blow them off the planet.

Returning from vacation, the Miller family find their home has been broken into. After cleaning up the mess they continue with their lives, shaking off the feeling of being violated. But little do they know the nightmare has just begun.

A 'National Geographic' film crew is taken hostage by an insane hunter, who takes them along on his quest to capture the world's largest — and deadliest — snake.

Detective Klaski investigates the death and mutilation of three men and soon crosses paths with Remy, an entomologist. Soon, he discovers that she is being stalked by a giant shape-shifting insect who is bent on taking over New York.

A young couple purchase their new home to start a life together, only to find out the elderly couple next door have other plans for them.

When an abused heiress grows to giant size because of her encounter with aliens, she decides to get revenge on her cheating husband and those who looked down on her.

Three friends making a web series about their town discover that their neighbors are being killed and replaced by creatures who are perfect copies of their victims.

In the early 1800s, a group of fur trappers and Indian traders are returning with their goods to civilization and are making a desperate attempt to beat the oncoming winter. When guide Zachary Bass is injured in a bear attack, they decide he's a goner and leave him behind to die. When he recovers instead, he swears revenge on them and tracks them and their paranoiac expedition leader down.

While on a hunting trip in the isolated wilderness, a father and his adopted teenage son are turned into the prey of unknown assailants. They are unexpectedly joined in their fight for survival by a stranger who reveals the disturbing truth about the son's biological father, an international crime lord, and why that crime lord has sent trained assassins to kill the teenager.

