1967: A brutal murder occurs at the Weston State Hospital in West Virginia. To amateur exorcist, Merle Blatty, this shocking story rings of the occult. Fueled by a desire to avenge the deaths of his wife and son, Merle investigates the case, unknowingly stepping into a sinister web spanning decades.

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.

Ana and Reid needed a lucky break. The horrifically complicated birth of their first child has left Ana paralyzed, bitter, and struggling: with mobility, with her relationship with Reid, with resentment for her baby. That's about to change with the words any New Yorker would love to hear—affordable housing lottery. They've won an apartment in the Deptford, one of Manhattan's most revered buildings. Reid dismisses disturbing events and Ana’s deep unease and paranoia as the price of living in New York—people are odd—but he can't explain the needle-like bite marks on the baby.

It’s 1998, and female students are going missing at Southern State University in North Carolina, but freshman Jessica Fadley, once a bright and responsible student, is going through her own struggles. Just as her life seems to be careening dangerously out of control, she suddenly disappears. Twenty-four years later, Jessica’s sister Lindsey is desperately searching for answers and uses the momentum of a new chart-topping true crime podcast that focuses on cold cases to guide her own investigation.

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.

"Mom seems off." Her brother's words echo in Sam Montgomery's ear as she turns onto the quiet North Carolina street where their mother lives alone. She brushes the thought away as she climbs the front steps. Sam's excited for this rare extended visit, and looking forward to nights with just the two of them, drinking boxed wine, watching murder mystery shows, and guessing who the killer is long before the characters figure it out. But stepping inside, she quickly realizes home isn’t what it used to be.

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.

Willy and Marianne’s farmhouse in Maine has acres of meadow and fresh air, and a lonesome bridle path in the forest along which Willy daydreams and ambles. When he’s loaned a decrepit old baby stroller to cart his groceries home, the rickety squeak of the wheels comforts him. So do the sweet coos of a baby Willy knows can’t be real. Can it? In this twisted thicket, wishes come true—with a price.

Thirty years after a tragic accident shut down production of the classic children’s program Mister Magic, the five surviving cast members have done their best to move on. But just as generations of cultishly devoted fans still cling to the lessons they learned from the show, the cast, known as the Circle of Friends, have spent their lives searching for the happiness they felt while they were on it. The friendship. The feeling of belonging. And the protection of Mister Magic.

When Louise finds out her parents have died, she dreads going home. She doesn’t want to leave her daughter with her ex and fly to Charleston. She doesn’t want to deal with her family home, stuffed to the rafters with the remnants of her father’s academic career and her mother’s lifelong obsession with puppets and dolls. She doesn’t want to learn how to live without the two people who knew and loved her best in the world. Most of all, she doesn’t want to deal with her brother, Mark, who never left their hometown, gets fired from one job after another, and resents her success.

Now reduced to a schoolyard chant, the Hope family murders shocked the Maine coast one bloody night in 1929. While most people assume seventeen-year-old Lenora was responsible, the police were never able to prove it. Other than her denial after the killings, she has never spoken publicly about that night, nor has she set foot outside Hope’s End, the cliffside mansion where the massacre occurred. It’s now 1983, and home-health aide Kit McDeere arrives at a decaying Hope’s End to care for Lenora after her previous nurse fled in the middle of the night.

In June 1993, a group of young guerilla filmmakers spent four weeks making Horror Movie, a notorious, disturbing, art-house horror flick. The weird part? Only three of the film’s scenes were ever released to the public, but Horror Movie has nevertheless grown a rabid fanbase. Three decades later, Hollywood is pushing for a big budget reboot.

St. Vincent's Orphanage for Boys. Turn of the century, in a remote valley in Pennsylvania. Here, under the watchful eyes of several priests, thirty boys work, learn, and worship. Peter Barlow, orphaned as a child by a gruesome murder, has made a new life here. As he approaches adulthood, he has friends, a future...a family. Then, late one stormy night, a group of men arrive at their door, one of whom is badly wounded, occult symbols carved into his flesh. His death releases an ancient evil that spreads like sickness, infecting St. Vincent's and the children within.

In the summer of 1994, psychologist Daniel Hill buys a rustic farmhouse nestled in the rolling hills of West Virginia. Along with his wife and teenage daughter, the family uproots their lives in Ohio and moves south. They are initially seduced by the natural beauty of the country setting. That soon changes when they discover a hidden room in the basement with a well, boarded shut and adorned with crucifixes. Local legends about the previous owner being an exorcist come to light, but by then, all Hell has broken loose.

In a boarded-up house on a dead-end street at the edge of the wild Washington woods lives a family of three. A teenage girl who isn’t allowed outside, not after last time. A man who drinks alone in front of his TV, trying to ignore the gaps in his memory. And a house cat who loves napping and reading the Bible. An unspeakable secret binds them together, but when a new neighbor moves in next door, what is buried out among the birch trees may come back to haunt them all.