My Best Friend's Exorcism (2022) Timeline Explained – Every Event in Order

Gretchen undergoes a dramatic personality shift because she becomes possessed by a demon named Andras after the group plays with a Ouija board and explores an abandoned building while under the influence of LSD. The demon's presence causes her to exhibit erratic behavior, including violent outbursts, manipulative tendencies, and physical symptoms like projectile vomiting. Her transformation into a cruel and calculating person is directly tied to the supernatural possession, not her own choices.

Foreshadowing: The attack by a supernatural force in the abandoned building directly precedes Gretchen's behavioral changes.

• gretchen possession
• demon behavior change
• lake house
• abandoned building

The friends unknowingly summon the demon when they use the Ouija board during their sleepover at Margaret's lake house. While under the influence of LSD, Abby and Gretchen venture into an abandoned building where they encounter the evil spirit, which then attaches itself to Gretchen. The Ouija board serves as the gateway, but it's their drugging and exploration of the building that allows the demon to choose Gretchen as its host.

Foreshadowing: The Ouija board session is the first supernatural event that sets the chain of possession in motion.

• ouija board
• summoning
• demon
• possession
• abandoned building
• lake house

Abby initially believes Gretchen was sexually assaulted because she doesn't yet understand that her friend is actually possessed by a demon. When Gretchen confides about the traumatic experience at the lake house and describes the frightening attack she suffered in the abandoned building, Abby interprets these disturbing events through the lens of sexual violence. This misdirection causes Abby to seek help from Gretchen's parents and school authorities, leading to her accusations against Wallace.

Foreshadowing: Abby's misinterpretation of the attack leads her to confront Wallace and make accusations that strain her friendships.

• abby
• assault
• misunderstanding
• wallace
• accusation

Christian Lemon is a fitness influencer who recognizes that Gretchen is possessed by a demon when he sees her. Unlike the adults and other students, Christian has knowledge of supernatural phenomena and agrees to perform an exorcism on Gretchen at the lake house where the possession began. His ability to identify and attempt to combat the demon suggests he has personal experience or knowledge of such entities, though his motivations remain somewhat mysterious.

Foreshadowing: Christian's disturbed reaction to Gretchen early in the film hints at his awareness of demonic presence.

• christian lemon
• exorcism
• fitness influencer
• possessed
• lake house

During the exorcism at Margaret's lake house, Christian attempts to rid Gretchen of the demon Andras. However, when the demon manifests and reveals itself as Christian's own mother, he panics and flees the scene, abandoning Abby to confront the evil alone. This leaves Abby to finish the exorcism by herself in a desperate physical confrontation with Gretchen.

Foreshadowing: Christian's earlier disturbance at Gretchen's presence foreshadows his personal connection to demonic entities.

• exorcism
• lake house
• christian mother
• demon
• flee
• confrontation

Abby stabs Gretchen as a desperate measure to expel the demon when Christian abandons the exorcism. With no other options available, Abby resorts to this violent act believing it is necessary to destroy the demonic entity possessing her friend. The stabbing represents the physical and emotional toll of the battle against evil, and it ultimately succeeds in banishing the demon, though it leaves Gretchen physically injured.

Foreshadowing: The desperation of the situation, with Christian fleeing, sets up Abby's extreme decision to use violence against her possessed friend.

• abby stabbing
• exorcism
• violence
• demon banishment
• desperate act

Andras is the name of the demon that possesses Gretchen. Abby discovers the name inscribed on a wall in the abandoned building where Gretchen was first attacked. The demon targets Gretchen specifically, likely because she was vulnerable during the LSD experience and the Ouija board session, making her an accessible host for the supernatural entity.

Foreshadowing: The discovery of Andras's name gives Abby the key information she needs to understand and eventually combat the demonic presence.

• andras
• demon
• name
• possession
• abandoned building
• wall inscription

Abby defeats the demon through a combination of confronting it at the lake house where it was summoned and physically attacking Gretchen when the exorcism fails. After Christian flees, Abby's improvised assault on Gretchen's body proves effective in driving out the entity. The demon is ultimately destroyed, freeing Gretchen from its grip, though the victory comes at the cost of violence and trauma.

Foreshadowing: The climactic battle at the lake house where everything began serves as the ultimate confrontation with the evil force.

• demon defeated
• exorcism
• battle
• abby
• possession broken
• lake house

Adults and authority figures dismiss Abby's concerns because her description of Gretchen's behavior and the alleged attack sounds like teenage drama or fabrication. When Abby tries to explain that Gretchen is possessed by a demon, her claims sound impossible and hysterical to adults like Sister Kathleen and Brother Morgan at school, as well as Gretchen's parents. Without evidence of supernatural activity, they attribute Gretchen's changes to typical teenage behavior or possible substance abuse.

Foreshadowing: Abby's failed attempts to get help from adults establish the isolation she faces in combating the demonic threat.

• adults
• disbelief
• authority
• sister kathleen
• brother morgan
• parents

Yes, Abby and Gretchen remain best friends despite the traumatic events. Even though Gretchen must relocate to start fresh after the possession, their bond survives the ordeal. The film ends with them continuing their annual tradition of returning to the lake house together, demonstrating that their friendship was ultimately strengthened by surviving the demonic threat together.

Foreshadowing: The film's closing scenes confirm that the friendship endures despite the physical separation and trauma they experienced.

• friendship
• reunion
• relocation
• annual trip
• lake house
• bond

Once possessed by Andras, Gretchen systematically targets her friends, particularly Margaret and Glee, as part of the demon's malicious influence. She exploits Margaret's insecurities and poisons Glee, demonstrating the corrupting nature of demonic possession. These cruel actions are not Gretchen's own choices but rather the demon using her body to spread harm to those around her, including those she once loved.

Foreshadowing: Gretchen's transformation into a manipulative bully directly follows her possession and escalates the danger to everyone around her.

• gretchen attacks friends
• margaret
• glee
• poison
• manipulation
• demon influence