While filming a documentary about an agoraphobic woman, a celebrity psychologist is drawn into supernatural events.
Believing he's found the frequency that will free human consciousness, a drug-addled techno producer builds a machine that kills people with sound.
A group of friends explore a haunted mansion's garden maze at night, which turns into a journey with no end.
In a housing estate in London, the team investigates poltergeist activity and capture astonishing evidence.
A wildlife film crew pursue local sightings of a rare wildcat in Central Asia using high-tech camera equipment.
A documentary crew interviews a woman and her two daughters, whom they suspect are witches.
British society struggles against the threat of completely unraveling after a catastrophic power outage leaves the entire country in the dark.