Hell House LLC Origins: The Carmichael Manor (2023)

Filmmaker and paranormal investigator Margot, her girlfriend Rebecca, and her brother Chase travel to a remote manor house in Rockland County to document their investigation of the Carmichael family murders. They investigate the disappearance of the primary suspects: the family patriarch, Arthur Carmichael, and his son, Patrick. Margot recounts how her interest in the paranormal began after a man tried to abduct her at a carnival when she was a child. In the house, they find a locked storage room full of the Carmichael family's belongings, including three clown mannequins.

Margot and Rebecca examine artifacts from the Abaddon Hotel at a local antique store. Rebecca recognizes a grandfather clock from the hotel and discovers film reels, documents, and a cross pendant in its hidden compartment. At the manor, Chase is disturbed by the clowns' apparent movement and the presence of a masked woman. After Margot and Rebecca return, Chase convinces them that the manor is haunted.

The recovered film reels depict Catherine Carmichael before and after her sister Margaret's death, who was killed in a car crash that also left Patrick with a broken arm. Following the accident, Patrick became withdrawn and disturbed, to which Catherine gave him the pendant to protect him. Further footage reveals that Patrick joined a cult run by Andrew Tully in hopes of resurrecting Margaret. The cult members invade the manor, where Margaret's ghost kills Catherine.

In the present, Rebecca's presentation to a real estate partner is disrupted by Catherine's ghost. Rebecca convinces Margot to leave the manor in the morning, but Chase disappears overnight. Footage recorded by Chase reveals that he was stalked and killed by one of the clown mannequins. Margot and Rebecca attempt to leave the house, but are unable to because the car battery is dead. They try to walk to the nearest town, but are forced to flee back to the manor after being harassed by cult members.

Disturbing text messages from Chase drive the two women to flee into the car, but the cult members surround them. Returning to the manor again, Margot hears Chase calling for her, leaving Rebecca, who is killed by Catherine's ghost. Margot finds Chase's eyeless corpse before being stalked by the clown, who corners and attacks her. Patrick is identified as the clown and the one who tried to abduct Margot as a child. In old footage recorded by Patrick, he apologizes to the camera before yelling at an unseen man to be quiet, before departing into a red room.

A mid-credit scene features Alice mentioning that the fair is coming back to town. In the background, a clown peeks through a window.