Renowned academic Dr Sparling seeks help with his project on a remote Irish village. Historical researchers Ben and Chloe are thrilled to be chosen—until they arrive. The village is isolated and forgotten. There is no record of its history, its stories. There is no friendliness from the locals, only wary looks and whispers. The villagers lock down their homes at sundown. A nameless fear stalks the streets. Nobody will talk—nobody except one little girl. Her story strikes dread into the hearts of the newcomers. Three times you see him. Each night he comes closer.

Mattie can't remember a time before she and William lived alone on a mountain together. She must never make him upset. But when Mattie discovers the mutilated body of a fox in the woods, she realizes that they’re not alone after all. There’s something in the woods that wasn’t there before, something that makes strange cries in the night, something with sharp teeth and claws. When three strangers appear on the mountaintop looking for the creature in the woods, Mattie knows their presence will anger William. Terrible things happen when William is angry.

On a sunny morning in June, Margaret Carpenter wakes up to find a new iPhone on her doorstep. She switches it on to find a text from her best friend, Charity Atwater. The problem is, Charity’s been missing for over a month. Most people in town—even the police—think she’s dead. Margaret and Charity have been lifelong friends. They share everything, know the most intimate details about one another…except for the destructive secret hidden from them both. A secret that will trigger a chain of events ending in tragedy, bloodshed, and death. And now Charity wants Margaret to know her story.

High up on the windswept cliffs of Pale Peak, Faye and Felix celebrate their new engagement. But soon, a chorus of ghastly noises erupts from the nearby woods: the screams of animals, the cries of children, and the mad babble of a hundred mournful voices. A dark figure looms near the windows in the dead of night, whispering to Faye. As the weather turns deadly, Felix discovers that his terrified fiancée isn't just mumbling in her sleep—she's whispering back.

Everyone knows about Ashburn House. They whisper its old owner went mad, and restless ghosts still walk the halls. They say it's the dwelling place of something cruel and sinister. But when Adrienne, desperate and in need of a place to stay, inherits the crumbling old mansion, she only sees it as a lifeline...until darkness falls.

To eight-year-old Bela, her family is her world. There’s Mommy, Daddo, and Grandma Ruth. But there is also Other Mommy, a malevolent entity who asks her every day: “Can I go inside your heart?” When horrifying incidents around the house signal that Other Mommy is growing tired of asking Bela the question over and over, Bela understands that unless she says yes, her family will soon pay. Other Mommy is getting restless, stronger, bolder. Only the bonds of family can keep Bela safe, but other incidents show cracks in her parents’ marriage. The safety Bela relies on is about to unravel.

Deep in the heart of Appalachia stands a crooked farmhouse miles from any road. The Morrows keep to themselves, and it's served them well so far. When girls go missing off the side of the highway, the cops don't knock on their door. Which is a good thing, seeing what's buried in the Morrows' backyard. But 19-year-old Michael Morrow isn't like the rest of his family. He doesn't take pleasure in the screams that echo through the trees.

Rory Morris isn’t thrilled to be moving back to her hometown, even if it is temporary. There are bad memories there. But her twin sister, Scarlett, is pregnant, estranged from the baby’s father, and needs support, so Rory returns to the place she thought she’d put in her rearview. After a night out at a bar where she runs into Ian, an old almost-flame, she hits a large animal with her car. And when she gets out to investigate, she’s attacked.

1920s England. Sarah Piper’s lonely, threadbare existence changes when her temporary agency sends her to assist an obsessed ghost hunter. Alistair Gellis—rich, handsome, and scarred by World War I—has been summoned to investigate the spirit of the nineteen-year-old maid Maddy Clare, who is said to haunt the barn where she committed suicide.

When Alex Easton, a retired soldier, receives word that their childhood friend Madeline Usher is dying, they race to the ancestral home of the Ushers in the remote countryside of Ruritania. What they find there is a nightmare of fungal growths and possessed wildlife, surrounding a dark, pulsing lake. Madeline sleepwalks and speaks in strange voices at night, and her brother Roderick is consumed with a mysterious malady of the nerves. Aided by a redoubtable British mycologist and a baffled American doctor, Alex must unravel the secret of the House of Usher before it consumes them all.

Episode Thirteen takes them to every ghost hunter's holy grail: the Paranormal Research Foundation. This brooding, derelict mansion holds secrets and clues about bizarre experiments that took place there in the 1970s. It's also famously haunted, and the team hopes their scientific techniques and high tech gear will prove it. But as the house begins to reveal itself to them, proof of an afterlife might not be everything Matt dreamed of.

After the loss of a child along with a slew of agonizing misfortunes, Nick and Jess decide to end their lives. Unable to cope with the misery that fills their days, they commit one last act together and die in loving relief. But when Nick wakes up, he soon realizes that death isn't the gentle darkness he expected. Panicked and horrified, he struggles to understand the twisted abominations and hellish world he's now trapped in.

Joe works at a facility that performs human experimentation. His work just followed him home. The government wanted to unlock hidden abilities in the human mind. They put subjects in extreme sensory deprivation. All the test subjects went violently insane. But the research continued. Today it has been perfected. Almost perfected.

Since the 1970s, FantasticLand has been the theme park where "Fun is Guaranteed!" But when a hurricane ravages the Florida coast and isolates the park, the employees find it anything but fun. Five weeks later, the authorities who rescue the survivors encounter a scene of horror. Photos soon emerge online of heads on spikes outside of rides and viscera and human bones littering the gift shops, breaking records for hits, views, likes, clicks, and shares.

When Margaret and her husband Hal bought the large Victorian house on Hawthorn Street—for sale at a surprisingly reasonable price—they couldn’t believe they finally had a home of their own. Then they discovered the hauntings. Every September, the walls drip blood. The ghosts of former inhabitants appear, and all of them are terrified of something that lurks in the basement. Most people would flee. Margaret is not most people. Margaret is staying.