Insidious: The Last Key is a 2018 American supernatural horror film directed by Adam Robitel and written by Leigh Whannell. It is produced by Jason Blum, Oren Peli, and James Wan. It is the fourth installment in the Insidious franchise, and the second in the chronology of the story running through the series. Starring Lin Shaye, Angus Sampson, Leigh Whannell, Spencer Locke, Caitlin Gerard, and Bruce Davison, the film follows parapsychologist Elise Rainier as she investigates a haunting in her childhood home.
The film was released in the United States on January 5, 2018, by Universal Pictures. It grossed $167 million worldwide, the highest of the franchise, and received mixed reviews, with praise for Shaye’s performance but some critics stating that the franchise had run its course.
Plot
In 1953, Elise Rainier lives in Five Keys, New Mexico with her parents Audrey and Gerald and younger brother Christian. One night, Elise encounters a ghost in she and Christian’s bedroom. Frightened, Christian looks for a whistle their mother gave him to call for help, but cannot find it. Gerald, furious, beats Elise and locks her in the basement. There, Elise opens a mysterious red doorway and is briefly possessed by a demonic spirit. When Audrey comes to investigate, she is killed by the demon.
Decades later, Elise works as a paranormal investigator with her colleagues Specs and Tucker. A man named Ted Garza calls, saying he’s been experiencing paranormal activity at his house. Realizing it’s her childhood home, Elise departs to help him. Upon arrival, Ted explains many paranormal incidents have occurred, mostly in her old bedroom. That night, Elise finds Christian’s lost whistle, but it disappears again after she encounters a female spirit. Elise tells Specs and Tucker that she had seen the spirit before when she was a teenager. After, Elise fled the house in fear of another beating from her father, abandoning Christian.
The next morning, Elise, Tucker, and Specs meet Melissa and Imogen, Christian’s daughters. Christian is still furious at Elise for abandoning him. Hoping to repair their relationship, Elise hands Melissa a photo of the whistle, telling her to show it to Christian. Later, Elise and Tucker discover a hidden room in the basement. Inside, they discover a young woman behind held prisoner. Ted storms into the room and reveals that he is responsible. He locks the group in and tries to kill Specs, but Specs gains an upper hand and kills him in self defense.
Sometime later, after police clear the house, Christian and his daughters go inside to find the whistle. In the basement, Melissa is attacked by the demon from Elise’ past, known as “Key Face.” Key Face sends her into a coma and she is taken to the hospital, with her consciousness now stuck in the spirit realm of “The Further.”
Trying to save Melissa, Elise searches the house and discovers hidden suitcases containing belongings of numerous other woman whom had been held prisoner, including the young woman she had seen as a teenager. Elise realizes that like Ted, her father also kidnapped women and held them in the secret room. The woman she saw as a teenager, Anna, was actually still alive, and was later killed by Gerald. Suddenly, Elise is ambushed by Key Face and her spirit is taken into the Further.
Imogen, whom possesses abilities much like Elise, enters The Further with the help of Specs and Tucker. She is led by Anna’s ghost into a prison realm where Key Face is holding all of the souls he has taken, including Melissa and Elise. Elise realizes Key Face had been controlling both Gerald and Ted, and feeds on the fear and hatred generated by the women they kidnapped and killed. Key Face tries to coerce Elise into hurting her father’s spirit as revenge for what he’s done. Elise starts beating Gerald, but is stopped by Imogen and refuses to feed Key Face any more hatred. Key Face attacks Elise, but Gerald saves her before he is stabbed by Key Face, and his soul vanishes.
Key Face stabs Melissa, causing her physical body to start dying. He attempts to possess Elise. Elise blows the whistle, and Audrey’s spirit arrives, vanquishing Key Face. With Melissa dying, they move to find her body in The Further. They open a door and see a young boy, Dalton Lambert, who also sees them. Realizing they opened the wrong door, they leave the door open and find Melissa in the next door. Melissa’s spirit returns to her body in the real world, saving her life. Elise makes amends with her mother’s spirit and says goodbye. Elise and Imogen return to the real world and reunite with Melissa and Christian. Christian forgives Elise and she gives him the whistle.
In her sleep, Elise sees a vision of Dalton and a red-faced demon. She awakens and receives a call from a woman named Lorraine. Elise had helped her son years earlier, and now her grandson Dalton needs the same help. Elise agrees.
Cast
- Lin Shaye as Elise Rainier
- Ava Kolker as Young Elise Rainier
- Hana Hayes as Teenage Elise Rainier
- Angus Sampson as Tucker
- Leigh Whannell as Specs
- Spencer Locke as Melissa Rainier, Elise’s niece and Christian’s youngest daughter.
- Caitlin Gerard as Imogen Rainier, Elise’s niece and Christian’s eldest daughter. She has also inherited the gift that Elise holds.
- Bruce Davison as Christian Rainier, Elise’s estranged younger brother.
- Pierce Pope as Young Christian Rainier
- Thomas Robie as Teenage Christian Rainier
- Kirk Acevedo as Ted Garza, a man who makes residence in Elise’s old home and calls for her help.
- Josh Stewart as Gerald Rainier, Elise and Christian’s abusive father and Audrey’s husband.
- Tessa Ferrer as Audrey Rainier, Elise and Christian’s mother and Gerald’s wife.
- Aleque Reid as Anna
- Marcus Henderson as Detective Whitfield
- Amanda Jaros as Mara Jennings
- Javier Botet as Key Face
- Joseph Bishara as Lipstick-Face Demon
- Ayub Veno as Imprisoned Spirit
Additionally, Ty Simpkins, Rose Byrne, Barbara Hershey, and Patrick Wilson reprise their roles as Dalton Lambert, Renai Lambert, Lorraine Lambert, and Josh Lambert, respectively, from the first two films, in archive footage.
Production
Principal photography began in August 2016,and ended the following month. On August 29, 2017, it was announced via Universal Studios’ Halloween Horror Nights that the film would be titled Insidious: The Last Key.
Release
Insidious: The Last Key was released on January 5, 2018. The film was then released a week later on January 12, 2018, in the United Kingdom.
Box office
Insidious: The Last Key has grossed $67.6 million in the United States and Canada, and $100.1 million in other territories, for a worldwide total of $167.7 million, against a production budget of $10 million. It is the highest grossing film in the franchise, surpassing the second installment’s $161 million, and the first film of the series to gross $100 million overseas.
In the United States and Canada, Insidious: The Last Key was released alongside the wide expansion of, and was projected to gross $20–22 million from 3,116 theaters in its opening weekend.The film made $1.98 grossed from Thursday night previews, the highest preview total of the franchise. It went on to debut to $29.3 million for the weekend, finishing second at the box office behind holdover Jumanji: Welcome to the Jungle and marking the second-highest opening of the series and grossing, behind Chapter 2.
Critical response
On review aggregator Rotten Tomatoes, the film has an approval rating of 32%, based on 87 reviews, with an average rating of 5.1/10. The website’s critical consensus reads, “Insidious: The Last Key offers franchise star Lin Shaye another welcome opportunity to take the lead, but her efforts aren’t enough to rescue this uninspired sequel.” On Metacritic, the film has a weighted average score of 49 out of 100, based on 23 critics, indicating “mixed or average reviews”. Audiences polled by CinemaScore gave the film an average grade of “B–” on an A+ to F scale, the lowest score of the franchise.
Screen Rant’s Sandy Schaefer scored the film 3/5 stars, stating “Insidious: The Last Key is a solid finale to the Insidious franchise that gives series lead Lin Shaye the chance to take a graceful final bow.” Brent McKnight of the Seattle Times rated the film two stars, saying “Old horror franchises don’t die, they unspool tepid, uninspired sequels in perpetuity. And with the fourth chapter, Insidious: The Last Key, this saga is on a familiar path.” Emily Yoshida of New York Magazine noted how “the fourth installment of Leigh Whannell’s ghost-and-mediums horror series wraps up its own free-association illogic with an impenetrable tangle of woo-woo spirit-world mechanics and lingo”, while John DeFore of Hollywood Reporter faulted the film’s delivery of “the boos” as remaining “cheap and arbitrary.
Home media
Insidious: The Last Key was released on Digital HD on March 20, 2018 and was released on DVD and Blu-ray on April 3, 2018, by Sony Pictures Home Entertainment.
Future
After the film’s success, it was reported by Bloody Disgusting that a sequel is currently in development.

