“Hereditary made me sleep with the lights on at the ripe old age of 21.”

Hi, I'm Harrison, a resident writer at BuzzFeed, crafting quizzes and covering entertainment and pop culture content.

Oh, and remember, I'm not responsible for any undergarments soiled while watching these films. Happy Halloween!

Rotten Tomatoes plot summary: "When the matriarch of the Graham family passes away, her daughter and grandchildren begin to unravel cryptic and increasingly terrifying secrets about their ancestry, trying to outrun the sinister fate they have inherited."

Rotten Tomatoes plot summary: "True-crime writer Ellison Oswald is in a slump; he hasn't had a bestseller in more than 10 years and is becoming increasingly desperate for a hit. So, when he discovers the existence of a snuff film showing the deaths of a family, he vows to solve the mystery. He moves his own family into the victims' home and gets to work. However, when old film footage and other clues hint at the presence of a supernatural force, Ellison learns that living in the house may be fatal."

Rotten Tomatoes plot summary: "A year after a severe emotional trauma, Sarah (Shauna Macdonald) goes to North Carolina to spend some time exploring caves with her friends; after descending underground, the women find strange cave paintings and evidence of an earlier expedition, then learn they are not alone: Underground predators inhabit the crevasses, and they have a taste for human flesh."

Rotten Tomatoes plot summary: "Found video footage tells the tale of three film students (Heather Donahue, Joshua Leonard, Michael C. Williams) who've traveled to a small town to collect documentary footage about the Blair Witch, a legendary local murderer. Over the course of several days, the students interview townspeople and gather clues to support the tale's veracity. But the project takes a frightening turn when the students lose their way in the woods and begin hearing horrific noises."

Rotten Tomatoes plot summary: "One of the most profitable horror movies ever made, this tale of an exorcism is based loosely on actual events. When young Regan (Linda Blair) starts acting odd – levitating, speaking in tongues – her worried mother (Ellen Burstyn) seeks medical help, only to hit a dead end. A local priest (Jason Miller), however, thinks the girl may be seized by the devil. The priest makes a request to perform an exorcism, and the church sends in an expert (Max von Sydow) to help with the difficult job."

Rotten Tomatoes plot summary: "Jack Torrance (Jack Nicholson) becomes winter caretaker at the isolated Overlook Hotel in Colorado, hoping to cure his writer's block. He settles in along with his wife, Wendy (Shelley Duvall), and his son, Danny (Danny Lloyd), who is plagued by psychic premonitions. As Jack's writing goes nowhere and Danny's visions become more disturbing, Jack discovers the hotel's dark secrets and begins to unravel into a homicidal maniac hell-bent on terrorizing his family."

Rotten Tomatoes plot summary: "It sounds like just another urban legend – a videotape filled with nightmarish images leads to a phone call foretelling the viewer's death in exactly seven days. Newspaper reporter Rachel Keller (Naomi Watts) is skeptical of the story until four teenagers all die mysteriously exactly one week after watching just such a tape. Allowing her investigative curiosity to get the better of her, Rachel tracks down the video and watches it. Now she has just seven days to unravel the mystery."

Rotten Tomatoes plot summary: "Paranormal researchers investigate strange events in a neighborhood in Buenos Aires."

Rotten Tomatoes plot summary: "Two children wake up in the middle of the night to find their father is missing, and all the windows and doors in their home have vanished."

Rotten Tomatoes plot summary: "A documentary crew visits Hell House to investigate what really happened 5 years earlier, when 15 people were killed during a haunted house tour."

Rotten Tomatoes plot summary: "Seven young outcasts in Derry, Maine, are about to face their worst nightmare – an ancient, shape-shifting evil that emerges from the sewer every 27 years to prey on the town's children. Banding together over the course of one horrifying summer, the friends must overcome their own personal fears to battle the murderous, bloodthirsty clown known as Pennywise."

Rotten Tomatoes plot summary: "A young American couple, their relationship foundering, travel to a Swedish midsummer festival where a seemingly pastoral paradise transforms into a sinister, dread-soaked nightmare as the locals reveal their terrifying agenda."

Rotten Tomatoes plot summary: "A family looks to prevent evil spirits from trapping their comatose child in a realm called The Further."

Note: Some responses have been edited for length and/or clarity.