A man is on his way home when the poorly constructed tunnel he is driving through collapses, leaving him trapped leaving himself for the unexpected whilst emergency services struggle to help.

Deep within Buenos Aires's labyrinthine subway system, a train mysteriously disappears along with its 30 passengers. The subway officials are greatly troubled and call in topographer Daniel Pratt to help them find it. Unfortunately, the tunnels are so vast and complex, that Pratt needs his mentor Hugo Mistein to help him. Unfortunately, he has vanished too.

The thirteen survivors of a catastrophe by a tunnel's collapse tries to balance their experience trapped along 15 days inside it with their day-by-day outside it.

A documentary filmmaker turns his lens on an enigmatic conspiracy theorist who claims he's found the entrance to a vast underground city populated entirely by monsters.

Trapped in a London subway station, a woman who's being pursued by a potential attacker heads into the unknown labyrinth of tunnels beneath the city's streets

A documentary about conspiracy theories takes a horrific turn after the filmmakers uncover an ancient and dangerous secret society.

Trying to escape her broken past, Sarah O’Neill is building a new life on the fringes of a backwood rural town with her young son Chris. A terrifying encounter with a mysterious neighbour shatters her fragile security, throwing Sarah into a spiralling nightmare of paranoia and mistrust, as she tries to uncover if the disturbing changes in her little boy are connected to an ominous sinkhole buried deep in the forest that borders their home.

Anxious to explore the mysterious hidden world under metropolitan Berlin, an international group of four urban explorers hires a local guide, Kris, who leads them into the maze of escape tunnels and subterranean fortifications under the city. When their guide has a bad fall, two of the girls in the group frantically set off to seek help while Denis, the young American, stays behind. Armin, a former East German border guard suddenly appears from nowhere. Out of sheer desperation, Denis allows Armin to lead them and their unconscious guide to safety and it is at this moment that Denis realizes he has just made the biggest mistake of his life!

A fear-obsessed freelance cameraman investigates an urban legend involving mysterious spirits that haunt the subways of Tokyo.

When a truck crashes inside a tunnel, people on their way home for Christmas are brutally trapped in a deadly fire. With a blizzard raging outside, and the first responders struggling to get to the accident, it's every man for himself.

A young woman in Paris goes to a party in the enormous labyrinth of limestone tunnels beneath Paris. When she becomes separated from her friends, she is convinced something is chasing her through the dark tunnels.

A group of young journalists investigate a cult said to practice human sacrifice, but their ambitious ways may lead them to becoming the cult's next victims.

After a group of biologists discovers a huge network of unexplored caves in Romania and, believing it to be an undisturbed eco-system that has produced a new species, they hire the best American team of underwater cave explorers in the world. While exploring deeper into the underwater caves, a rockslide blocks their exit, and they soon discover a larger carnivorous creature has added them to its food chain.

Ella discovers a terrifying secret when she becomes trapped in an underground storage facility. To survive she must join forces with a group of strangers, each with something to hide.

Reporter Na-yeong and her partner investigate a series of mysterious deaths and a perplexing case where her source was allegedly already dead at the time of their interview. Together they end up confronting a terrifying truth.

Rie is a PR-coordinator visiting a tunnel boring machine to portray the well-oiled European cooperation in the Metro construction when an accident suddenly occurs. Unable to escape, she takes refuge in an airlock with Croatian miner Ivo and Bharan, a worker from Eritrea.

In 1944, in the Belgian - German border, seven German soldiers survive an American attack in the front and lock themselves in a bunker to protect the position. Under siege by the enemy and with little ammunition, they decide to explore underground tunnels to seek supplies and find an escape route. While in the tunnel, weird things happen with the group.

Inspired by true events, Olympic swimmer Harry Melchior defects from East Germany in the 1960s and hatches a daring plot to help his sister and others flee East Berlin through a 145-yard underground tunnel.

Terror strikes the underground train system in Moscow in the form of a flood from a collapsed tunnel. The film follows a diverse group of Moscow citizens who find themselves trapped in the city’s underground rail network, their train derailed and virtually crushed after an aging tunnel collapses. Amongst this band of survivors is softly spoken surgeon Andrey (Sergei Puskepalis), whose wife is having an affair with the conceited businessman Vlad (Anatoly Beliy). Fate brings these two men together on the same doomed train, but there is little time to resolve their differences, as the tunnel begins to quickly fill with water, forcing them to work together with the others and find a way back to the surface.

An adventure-loving couple convince their friends to explore a remote, uncharted cave system in the forests of Northern Australia. With a tropical storm approaching, they abseil into the mouth of the cave, but when the caves start to flood, tensions rise as oxygen levels fall and the friends find themselves trapped. Unknown to them, the storm has also brought in a pack of dangerous and hungry crocodiles.

An experimental submarine with a very experienced crew, the "Siren II" is sent to find out what happened to the "Siren I" after it mysteriously disappeared in a submarine rift. Things go awry when they begin to find things that shouldn't be there...

Four teenagers at a British private school secretly uncover and explore the depths of a sealed underground hole created decades ago as a possible bomb shelter.

Contaminated by a nuclear-plant spill, an Australian worker hides with a woman and tries to warn the public.

A group of elite soldiers sent to infiltrate and extract the lead science team from Pine Gap, Australia's top secret underground military compound, after it comes under attack from unknown forces. The mission is compromised when they encounter a young woman with no memory of who she is or how she came to be there. As they try to escape, the group quickly discovers all is not as it seems and the facility has become a testing ground for something far more sinister.

Master diver Frank McGuire has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team—including 17-year-old son Josh and financier Carl Hurley are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out.

A desperate young journalist turns to podcasting to salvage her career, but her rush to make headlines leads her to an alien conspiracy.

In 1984, a Russian research team goes below the surface to find out what secret the world's deepest borehole is hiding. On their expedition, something unexpectedly gruesome awaits the researchers.

Three young conspiracy theorists attempt to uncover the mysteries of Area 51, the government's secret location rumored to have hosted encounters with alien beings. What they find at this hidden facility exposes unimaginable secrets.

Rachel Keller is a journalist investigating a videotape that may have killed four teenagers. There is an urban legend about this tape: the viewer will die seven days after watching it. Rachel tracks down the video... and watches it. Now she has just seven days to unravel the mystery of the Ring so she can save herself and her son.

Deep beneath the surface in the Syrian province of Ghouta, a group of female doctors have established an underground field hospital. Under the supervision of paediatrician Dr. Amani and her staff of doctors and nurses, hope is restored for some of the thousands of children and civilian victims of the ruthless Syrian civil war.

A paraplegic computer engineer that moves in a wheelchair and works in his basement starts hearing noises and voices of bank-robbers.

A student moves in with a family that lives in an underground house in the middle of the forest, far from civilization. His hopes of peace and quiet are soon shattered, when it becomes apparent that both the parents and their son have a screw loose.

A cinematic portrait of the homeless population who live permanently in the underground tunnels of New York City.

Indigenous Detective Jay Swan arrives in the frontier town of Goldstone on a missing persons inquiry. What seems like a simple investigation unearths an intricate web of crime, corruption, human trafficking, and coordinated exploitation of indigenous people’s land. Jay must bury his differences with young local cop Josh, so together they can bring justice to Goldstone.

October 2015. French customs seize seven tonnes of cannabis in the heart of the capital. The same day, Hubert Antoine, a former mole with a shady past, contacts Stéphane Vilner, a journalist at Libération. He claims to be able to demonstrate the existence of State drug trafficking led by Jacques Billard, prominent media figure and high-ranking French police officer. Suspicious at first, the young journalist finally dives into an investigation that will lead him to the darkest corners of the Republic.

While traveling across country with her fiancé, Beth wakes alone in an isolated clinic to a mother's worst nightmare. Just how far will she go to save her child?

When a government official disappears in the London tunnels, after several reports of missing people in the same location, Scotland Yard start to take the matter seriously, along with a couple who stumble into a victim by accident.

In the desert area of Hat Creek, cows are found partially devoured and the farmers believe that a wolf is attacking the cattle. The alcoholic Sheriff Annie Flynn is called by the local farmer Rob Horn to witness the remains of an animal to request reimbursement from the government and for an accident with a tank truck that is blocking the road.

Laura, 25, is an actress in a L.A.R.P. (Live Action Role Playing) Game, where the participants play the survivors of an atomic war who live underground in a sealed bunker. After several mysterious accidents, the game is interrupted and the players leave the bunker while the staff remain behind to investigate the disappearance of Greg, the mastermind of the game. They soon find themselves trapped inside and in peril as they begin to die in mysterious ways and the group realizes that someone or something paranormal is playing a twisted game with them which quickly plunges into a terrifying fight for survival.

After 16-year-old Alice Palmer drowns at a local dam, her family experiences a series of strange, inexplicable events centered in and around their home. Unsettled, the Palmers seek the help of a psychic and parapsychologist, who discovers that Alice led a secret, double life. At Lake Mungo, Alice's secret past emerges.

An American tourist and a troubled young woman are chased by her gang leader brother to a top secret British government facility that conducts experiments on children.

An archaeological team attempt to unlock the secrets of a lost pyramid only to find themselves hunted by an insidious creature.

When five women take part in a corporate hiking retreat and only four come out on the other side, Federal Agents Aaron Falk and Carmen Cooper head deep into the Victorian mountain ranges to investigate in the hopes of finding their whistle-blowing informant, Alice Russell, alive.

Karen, a young psychiatric nurse, boards the last subway train of the night only to have it stop in the middle of the tunnel. Suddenly, her nightmare begins: a mysterious cult has decided that it's the end of the world and the only way to save the souls of the living is to kill them in cold blood. As those around her are brutally murdered, Karen and a handful of survivors must face the homicidal cult, supernatural forces, and their own fears of Armageddon in order to survive.

In the near future, oil reserves are nearly depleted and Europe is connected by series of underground tunnels. While navigating these tunnels, Roger hears voices, one in particular. Seeking a way to rid himself of the voice only leads Roger deeper into a bizarre conspiracy of control - mind and body.

A man who suspects his wife is cheating on him begins having nightmarish visions of an evil presence that he believes inhabits his house.

When a priest is jailed for the murder of a nun on whom he was performing an exorcism, an investigative journalist strives to determine whether he in fact murdered a mentally ill person, or if he lost the battle with a demonic presence.

Passengers on a murder mystery train that crashes into a river must decide whether to risk waiting for help in the wreckage or take their chances in the murky depths below.

The true story of Australia's cat-and-mouse underground mine warfare—one of the most misunderstood, misrepresented and mystifying conflicts of WW I. It was secret struggle BENEATH the Western Front that combined daring engineering, technology and science. Few on the surface knew of the brave, claustrophobic and sometimes barbaric work of these tunnellers.

While doing a series of reports on alternative energy sources, opportunistic reporter Kimberly Wells witnesses an accident at a nuclear power plant. Wells is determined to publicize the incident, but soon finds herself entangled in a sinister conspiracy to keep the full impact of the incident a secret.

Tricia's husband has been missing for seven years. Her younger sister Callie comes to live with her as the pressure mounts to finally declare him 'dead in absentia'. Tricia is reluctant, always holding out hope, but Callie is practical and wants her to move on. As Tricia sifts through the wreckage and tries to move on with her life, Callie finds herself drawn to an ominous tunnel near the house.

Two journalists set out to document their friend's journey to reunite with his estranged sister. They track her to an undisclosed location where they are welcomed into the remote world of "Eden Parish," a self-sustained rural utopia composed of nearly two hundred members and overseen by a mysterious leader known only as "Father." It quickly becomes evident to the newcomers that this paradise may not be as it seems. Eden Parish harbors a twisted secret. What started as just another documentary shoot soon becomes a fight for survival.

In 1933, Welsh journalist Gareth Jones travels to Ukraine, where he experiences the horrors of a famine. Everywhere he goes he meets henchmen of the Soviet secret service who are determined to prevent news about the catastrophe from getting out. Stalin’s forced collectivisation of agriculture has resulted in misery and ruin—the policy is tantamount to mass murder.

Epecuén was one of the most important touristic villages of Argentina. Thousands of people concurred, attracted by the healing properties of its thermal waters. On November 10th 1985, a huge volume of water broke the protecting embankment and the village was submerged under ten meters of salt water. Epecuén disappeared. Thirty years later, the waters receded and the ruins of Epecuén emerged exposing a bleak and deserted landscape. The residents never returned. The plot revolves around a group of young people that take a trip to the ruins in order to film a documentary about Epecuén. Ignoring the warnings, and after a brief tour, they get stranded in the abandoned village. Contrary to what they thought, they begin to realize that they are really not alone…

A international science conference is held in Australia when Dr. Austin Shepard mysteriously disappears. Dr. Shepard's colleague, Christopher Richardson and other people are soon faced with the reality of an impending crisis and an attempt to keep the information from the public. While a full-blown supernova does not occur, explosions on the sun cause massive damage in Australia, and is shown often in Sydney and in various other cities and countries of the world.

Several people disappear from and at the sea. Their bodies are found gnawed to the skeleton, even the marrow is missing. The scientists have no idea which animal could do such things. Dr. Turner begins to suspect that the company which builds a tunnel beneath the bay might have poisoned the environment and caused an octopus to mutate to giant dimensions...

13-year-old Sinikka vanishes on a hot summer night. Her bicycle is found in the exact place where a girl was killed 23 years ago. The dramatic present forces those involved in the original case to face their past.

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.

A businessman, on his daily commute home, gets unwittingly caught up in a criminal conspiracy that threatens not only his life but the lives of those around him.

A group of students become trapped inside a mysterious cave where they discover time passes differently underground than on the surface.

After the elevators at a New York City skyscraper begin inexplicably malfunctioning, putting its passengers at risk, mechanic Mark Newman and reporter Jennifer Evans begin separate investigations. Newman gets resistance from superiors at his company, which manufactured the elevator, while additional elevator incidents cause several gruesome deaths. The police get involved and suspect that terrorists are responsible, but a far stranger explanation looms.

A television reporter and cameraman follow emergency workers into a dark apartment building and are quickly locked inside with something terrifying.

Rose, a desperate mother takes her adopted daughter, Sharon, to the town of Silent Hill in an attempt to cure her of her ailment. After a violent car crash, Sharon disappears and Rose begins a desperate search to get her back. She descends into the center of the twisted reality of a town's terrible secret. Pursued by grotesquely deformed creatures and townspeople stuck in permanent purgatory, Rose begins to uncover the truth behind the apocalyptic disaster that burned the town 30 years earlier.

The Cove tells the amazing true story of how an elite team of individuals, films makers and free divers embarked on a covert mission to penetrate the hidden cove in Japan, shining light on a dark and deadly secret. The shocking discoveries were only the tip of the iceberg.

After a night of wild partying and missing their train, the group of students is invited to board another which happens to be heading their way. Once on board, members of the team begin to go missing, and their would-be saviors claim to have no idea what could have happened to them... When they discover the truth, it is too late to escape and they must fight for their lives against their captors to put an end to their ride to hell.

When a mysterious brick wall encloses their apartment building overnight, Tim and Olivia must unite with their wary neighbors to get out alive.

A supernatural thriller about a group of teenagers menaced by a driver-less train in the Australian outback.

Due to political pressure from the American public, the Air Force has decided to allow two well-known reporters limited access to the most secretive base on the planet. But when one of the base’s “long-term visitors” exploits this unprecedented visit as a chance to liberate himself and his fellow alien captives, Area 51 turns from a secure government base to a horrifying destination of terror.

Four bodies are found at a cave accident and forensics point to the only survivor as the culprit. He denies guilt, accusing his wife of committing the crime. But how is this so? She is one of the deceased.

Laura has recently started working in the Barcelona subway. She has been assigned the old and quiet Rocafort station, but it won't be long before she discovers that this stop harbors a legend that will begin to haunt her: many people have died there in strange circumstances over the years and no one seems to be interested in knowing the truth.

A traveller by the name of Crossley forces himself upon a musician and his wife in a lonely part of Devon, and uses the aboriginal magic he has learned to displace his host.

With the help of his girlfriend Cathy and Dr. Fong, a psychiatrist, ambitious journalist Johnny Barrett poses as a madman in order to be admitted to a mental institution where a bloody murder has been committed.

A crew of coal miners becomes trapped 600 feet below ground after a disastrous collapse. As the air grows more toxic and time runs out, they slowly descend into madness and begin to turn on one another. Inspired by true events.

Aaron Falk returns to his drought-stricken hometown to attend a tragic funeral. But his return opens a decades-old wound - the unsolved death of a teenage girl.

A family takes refuge in a fallout shelter to avoid a dangerous outbreak.

Two hoodlums terrorize the passengers of a late-night New York City subway train.

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.

Based on true events, Grace, her boyfriend Adam, and her younger sister, Lee, are on holiday in Northern Australia when they decide to take a tour down a river. As they drift into a swamp, their boat suddenly capsizes. Stranded in the flooded swamp, the three tourists must figure out what to do to survive as they realize they are being watched through the black water.

In the rail yards of Queens, contractors repair and rebuild the city's subway cars. These contracts are lucrative, so graft and corruption are rife. When Leo Handler gets out of prison, he finds his aunt married to Frank Olchin, one of the big contractors; he's battling with a minority-owned firm for contracts.

Otherworldly creatures inhabit the bootlegging tunnels underneath a small town mining community, and they kill any of the townsfolk who invade their home.

A socially awkward driver and a weary passenger try to make it to their destination while being haunted by a supernatural threat.

A tale about a strange young man, Bulcsú, and the fellow ticket inspectors on his team who work aboard the subterranean Budapest Metro. A tale about racing along the tracks, and about a mysterious serial killer. And a tale about love.

A DNA experiment on a rare breed of spider is taking place on a NASA space shuttle, when a freak meteor shower engulfs the shuttle, causing everything to go horribly wrong. One survivor is found on the ship and watched over in a secret location deep in the California desert. The problem continues, as the survivor isn't alone, as another deadly spiders climbs out of him and goes on a rampage around the ship. Curious reporter Marci Eyre must now survive, escape and warn everyone before the spider reaches outside the desert.

Julia becomes worried about her boyfriend Holt when he explores the dark urban legend of a mysterious videotape said to kill the watcher seven days after viewing. She sacrifices herself to save her boyfriend and in doing so makes a horrifying discovery: there is a "movie within the movie" that no one has ever seen before.

Two miners agree to guide a mysterious woman, who has appeared in their camp from nowhere, to a nearby town; but soon, because of her erratic behavior, they begin to suspect that her true purpose is quite different.

While recording sound effects for a slasher flick, Jack Terry stumbles upon a real-life horror: a car careening off a bridge and into a river. Jack jumps into the water and fishes out Sally from the car, but the other passenger is already dead — a governor intending to run for president. As Jack does some investigating of his tapes, and starts a perilous romance with Sally, he enters a tangled web of conspiracy that might leave him dead.

A Sydney lawyer defends five Aboriginal Persons in a ritualised taboo murder and in the process learns disturbing truths about himself and premonitions.

Neighbors in a block wake one morning to find they have been sealed inside their apartments. Can they work together to find out why? Or will they destroy each other in their fight to escape?

After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.

Two strangers, Jerzy and Marta, accidentally end up holding tickets for the same sleeping chamber on an overnight train to the Baltic Sea coast. Also on board is Marta's spurned lover, who will not leave her alone. When the police enter the train in search of a murderer on the lam, rumors fly and everything seems to point toward one of the main characters as the culprit.

Investigative journalist, Jeremy Scahill is pulled into an unexpected journey as he chases down the hidden truth behind America's expanding covert wars, and examines how the US government has responded to international terrorist threats in ways that seem to go against the established laws of the land.

In the final days of WWI a shell-shocked soldier must lead a mission deep beneath the trenches to stop a German plot that could turn the tide of the war.

When Washington Post journalist Jamal Khashoggi disappears after entering Saudi Arabia’s consulate in Istanbul, his fiancée and dissidents around the world are left to piece together the clues to a brutal murder and expose a global cover up perpetrated by the very country he loved.

Two strangers strike up a conversation on a long journey. However, neither is who they appear to be, each carry secrets that threaten to ruin them — and in the background, one of the nation's largest police operations is closing in.

In an attempt to pull her family together, Adèlle travels with her young daughter Sarah to Wales to visit her father. The morning after they arrive, Sarah mysteriously vanishes in the ocean. Not long after, a little girl bearing a striking resemblance to their missing daughter reveals that she has retuned from the dead — and that Sarah has been taken to the Welsh underworld.

Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors. Unable to plausibly explain to the authorities what happened - or why she's covered in her friends' blood - Sarah is forced back to the subterranean depths to help locate her five missing companions.

A mysterious video has been linked to a number of deaths, and when an inquisitive journalist finds the tape and views it herself, she sets in motion a chain of events that puts her own life in danger.

When young and successful reporter Jamie finds out that her sister has died in mysterious circumstances, she travels to Singapore to uncover the truth. There, she discovers multiple deaths linked to her sister's and must join forces with her sister's husband in order to defeat a demonic entity that is using new technology to complete an ancient mission.

When a mysterious corpse is found in a river, a distressed police officer delves into a string of grisly murders as danger quickly approaches.