Halloween, 1963. They call him the October Boy, or Ol' Hacksaw Face, or Sawtooth Jack. Whatever the name, everybody in this small Midwestern town knows who he is. How he rises from the cornfields every Halloween, a butcher knife in his hand, and makes his way toward town, where gangs of teenage boys eagerly await their chance to confront the legendary nightmare. Both the hunter and the hunted, the October Boy is the prize in an annual rite of life and death. Pete McCormick knows that killing the October Boy is his one chance to escape a dead-end future in this one-horse town.

It's not safe for anyone alone in the woods. There are predators that come out at night: critters and coyotes, snakes and wolves. But the woman in the red jacket has no choice. Not since the Crisis came, decimated the population, and sent those who survived fleeing into quarantine camps that serve as breeding grounds for death, destruction, and disease. She is just a woman trying not to get killed in a world that doesn't look anything like the one she grew up in, the one that was perfectly sane and normal and boring until three months ago.

Welcome to Black Spring, the seemingly picturesque Hudson Valley town haunted by the Black Rock Witch, a seventeenth century woman whose eyes and mouth are sewn shut. Muzzled, she walks the streets and enters homes at will. She stands next to children's bed for nights on end. Everybody knows that her eyes may never be opened or the consequences will be too terrible to bear.

“Come home.” Vera’s mother called and Vera obeyed. In spite of their long estrangement, in spite of the memories — she's come back to the home of a serial killer. Back to face the love she had for her father and the bodies he buried there, beneath the house he'd built for his family.

It’s the house of their dreams. Former marine Harry and his wife, Sasha, have packed up their life and their golden retriever, Dash, and fled the corporate rat race to live off the land in rural Idaho. Their breathtaking new home sits on more than forty acres of meadow, aspen trees, and pine forest in the Teton Valley. Even if their friends and family think it’s a strange choice for an up-and-coming pair of urban professionals, Harry and Sasha couldn’t be happier about the future they’re building, all by their lonesome.

Once there was a mermaid called Amelia who could never be content in the sea, a mermaid who longed to know all the world and all its wonders, and so she came to live on land. Once there was a man called P. T. Barnum, a man who longed to make his fortune by selling the wondrous and miraculous, and there is nothing more miraculous than a real mermaid. Amelia agrees to play the mermaid for Barnum and walk among men in their world, believing she can leave anytime she likes. But Barnum has never given up a money-making scheme in his life, and he's determined to hold on to his mermaid.

In a warren of crumbling buildings and desperate people called the Old City, there stands a hospital with cinderblock walls that echo the screams of the poor souls inside. In the hospital, there is a woman. Her hair, once blond, hangs in tangles down her back. She doesn't remember why she's in such a terrible place. Just a tea party long ago, and long ears, and blood.

On an island lives a boy called Peter and his band of merry lost boys, young forever. That is unless they get sick or killed by pirates or eaten by crocodiles or unless - inexplicably - they grow old. For some of them do grow old, and nobody knows why. One of these boys is called Jamie, and he was the first boy that Peter ever brought to the island. Jamie's lived there for longer than he can remember, and it's not all fun and games.

When people go missing in the sleepy town of Smith’s Hollow, the only clue to their fate comes when a teenager starts having terrifying visions, in a chilling horror novel from national best-selling author Christina Henry.

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.

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.

Once, there were four worlds, nestled like pages in a book, each pulsing with fantastical power and connected by a single city: London. Until the magic grew too fast and forced the worlds to seal the doors between them in a desperate gamble to protect their own. The few magicians who could still open the doors grew more rare as time passed and now, only three Antari are known in recent memory—Kell Maresh of Red London, Delilah Bard of Grey London, and Holland Vosijk, of White London.

It’s Halloween night, 1984, in Coventry, Massachusetts, and two families are unraveling. Up and down the street, horrifying secrets are being revealed, and all the while, mixed in with the trick-or-treaters of all ages, four children who do not belong are walking door to door, merging with the kids of Parmenter Road. Children in vintage costumes with faded, eerie makeup. They seem terrified, and beg the neighborhood kids to hide them away, to keep them safe from The Cunning Man.

Marcus grew up believing his father killed his mother—then blamed it on the boogeyman under the bed. Always leave the lights on, his father warned, or the boogeyman will get you. Marcus still heeds the superstition, especially when he invites his new girlfriend over. Is Marcus haunted by a creature or has he just inherited his father’s murderous delusions? The night will tell.

Thirty years ago, Wilde was found as a boy living feral in the woods, with no memory of his past. Now an adult, he still doesn't know where he comes from, and another child has gone missing. No one seems to take Naomi Pine's disappearance seriously, not even her father - with one exception. Hester Crimstein, a television criminal attorney, knows through her grandson that Naomi was relentlessly bullied at school. Hester asks Wilde - with whom she shares a tragic connection - to use his unique skills to help find Naomi.

Once there was a mermaid called Amelia who could never be content in the sea, a mermaid who longed to know all the world and all its wonders, and so she came to live on land. Once there was a man called P. T. Barnum, a man who longed to make his fortune by selling the wondrous and miraculous, and there is nothing more miraculous than a real mermaid. Amelia agrees to play the mermaid for Barnum and walk among men in their world, believing she can leave anytime she likes. But Barnum has never given up a money-making scheme in his life, and he's determined to hold on to his mermaid.

It's not safe for anyone alone in the woods. There are predators that come out at night: critters and coyotes, snakes and wolves. But the woman in the red jacket has no choice. Not since the Crisis came, decimated the population, and sent those who survived fleeing into quarantine camps that serve as breeding grounds for death, destruction, and disease. She is just a woman trying not to get killed in a world that doesn't look anything like the one she grew up in, the one that was perfectly sane and normal and boring until three months ago.

In a warren of crumbling buildings and desperate people called the Old City, there stands a hospital with cinderblock walls that echo the screams of the poor souls inside. In the hospital, there is a woman. Her hair, once blond, hangs in tangles down her back. She doesn't remember why she's in such a terrible place. Just a tea party long ago, and long ears, and blood.

When people go missing in the sleepy town of Smith’s Hollow, the only clue to their fate comes when a teenager starts having terrifying visions, in a chilling horror novel from national best-selling author Christina Henry.

On an island lives a boy called Peter and his band of merry lost boys, young forever. That is unless they get sick or killed by pirates or eaten by crocodiles or unless - inexplicably - they grow old. For some of them do grow old, and nobody knows why. One of these boys is called Jamie, and he was the first boy that Peter ever brought to the island. Jamie's lived there for longer than he can remember, and it's not all fun and games.

Celia wakes up in a house that’s supposed to be hers. There’s a little girl who claims to be her daughter and a man who claims to be her husband, but Celia knows this family—and this life—is not hers… Allie is supposed to be on a fun weekend trip—but then her friend’s boyfriend unexpectedly invites the group to a remote cabin in the woods. No one else believes Allie, but she is sure that something about this trip is very, very wrong.

Harry Adams has always loved horror movies, so it’s not a total coincidence that she took the job cleaning house for movie director Javier Castillo. His forbidding graystone Chicago mansion, Bright Horses, is filled from top to bottom with terrifying props and costumes, as well as glittering awards from his career making films that thrilled audiences—until family tragedy and scandal forced him to vanish from the industry.

In the summer of 1988, the mutilated bodies of several missing girls begin to turn up in a small Maryland town. The grisly evidence leads police to the terrifying assumption that a serial killer is on the loose in the quiet suburb. But soon a rumor begins to spread that the evil stalking local teens is not entirely human. Law enforcement, as well as members of the FBI, are certain that the killer is a living, breathing madman - and he’s playing games with them.

It was Vera’s idea to buy the Itza. The “world’s most advanced smart speaker!” didn’t interest Thiago, but Vera thought it would be a bit of fun for them amidst all the strange occurrences happening in the condo. It made things worse. The cold spots and scratching in the walls were weird enough, but peculiar packages started showing up at the house - who ordered industrial lye? Then, there was the eerie music at odd hours, Thiago waking up to Itza projecting light shows in an empty room.

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.