Charles and Sally, paranormal researchers, disguised as insurance workers, arrive at a suburban house in Toronto one evening. They work for the Mereville Group—a team of paranormal investigators running various projects and investigations. The group appears on the surface as a multi-national insurance company. 

The house is beautiful but is the only one with a dead lawn. As they get out of the car, Sally notices a bulge in Charles’ pants. The house is next to what Sally thinks is a little league field.

Four days ago, the Westons died there in what was ruled an accident. They died the day after they moved in. There was no evidence of the neighbors causing a scene or investigators around. Charles gives Sally a warning before entering the house. He tells her not to let her mind focus on any part of it. Sally cannot believe she is going inside one of The Eight—a collection of eight buildings that are haunted and observed by a secret paranormal research team. This is not public knowledge. Sally only knows as she is newly part of the team.

They go inside and meet the Westons’ children, Ted, and Dawn. Dawn is distraught and speaking with a psychic, Morningside, who is going to hold a vigil. Ted and Dawn hired Morningside in the hopes they would find some other explanation for the “accidental” deaths of their parents.

Charles and Sally stay for the ritual. Morningside attempts to communicate with the deceased by allowing the spirits to control her writing. Sally, who is a telepath, interrupts her and causes the psychic to write “Brittany Spears” on the paper. Everyone dismisses Morningside’s powers and the idea that the house is haunted. Charles and Sally reiterate to the Westons that their parents died accidentally, and the accident could not be blamed on supernatural causes. Morningside leaves, Dawn needs air so Ted leads her outside.

Charles and Sally stay inside to talk. Sally says that Morningside may have weak psychic abilities but doesn’t know how to use them. Charles encourages her to add her to the list of psychics for the Mereville Group anyways. Sally says she isn’t picking anything up. Charles says that it doesn’t really matter because no one will ever live here again. They talk about how whoever sold this house, is going to be in a lot of trouble. Sally wants to look around. Charles discourages her, as houses part of the eight are like slaughterhouses. Eventually, he gives in so long as she does not touch anything. He goes outside to smoke with Ted.

Ted questions Charles and Sally’s purpose in coming to the house—he finds it suspicious. Charles gaslights him and reiterates that they are there for insurance purposes. Ted and Dawn leave. Ted takes a baseball out of his pocket. The baseball comes from the Mereville Group’s private collection of paranormal artifacts. It had been found in this house when the Group took ownership in 1944. The significance is unknown, though some theorize it to be an apport—an object which appears out of nowhere. Charles must return it that night, so the "snoops" don’t bother him. The "snoops" will first be visiting Dustin Haney, the man who sold the Westons the house. Dustin also worked for the Mereville Group and knew that this property, like the rest of The Eight, was to be secure and kept off the market. Haney oversaw operatives and was responsible for checking in on the property weekly to make sure nothing had gone wrong. Haney’s name was associated with the listing, but no one know why he sold it. He went missing after the Weston’s closed on the house.

Sally was young when she was recruited. It wasn’t until she was recruited that she learned she was a telepath. She finds herself in the bathroom where the Westons died. The husband was found with his throat accidentally slit, caused by him falling in the bathroom and grabbing the mirror for support. After discovering her husband, the wife fell down the stairs in a panic and broke her neck. The story released did not seem very likely. Sally went into the master bedroom. She started taking sheets off the furniture. She found a mirror. She covered it after almost dropping it. She then looked out the window and saw the baseball field. She finds a vanity bench. She uncovers it. She sat down and looked into the mirror. She closed her eyes and touched the mirror. She had a gruesome vision about hearing the crack of a bat as a baseball flies through the glass and breaks the mirror. She sees herself then being stabbed into the eye and into the brain by a shard of glass from the broken mirror. She takes her hands off the mirror, disturbed. She gets up and the mirror from earlier has moved. She trips over it and the glass breaks. It turns into a monster and tries to stab her. It chases her through the house. Charles comes inside and throws the baseball at it. He starts leading Sally out of the house, but Sally makes him go back for the ball. He takes her to the hospital.