Grandmother’s House

David and Lynn are orphaned and sent to live with their maternal grandparents in a large Victorian house in rural California. On their first night, David dreams of his grandfather killing a woman, a nightmare that foreshadows a looming danger. The move marks the beginning of a tense, claustrophobic stay.

At a local swimming competition, the siblings sense trouble as a mysterious woman hitchhikes with a local man and seems to shadow them. David notices the woman beckoning to him from behind the bleachers, hinting at a persistent threat. The eerie presence sets the tone for what follows.

Police remove a corpse from a pond on the property, and report that the victim's van is missing. The discovery adds a menacing air to the grandparents' home and confirms that danger lies nearby. The siblings grow anxious as strange events cascade around them.

During a family barbecue with the Sacketts, Raymond tells of a murdered woman believed to be inside an irrigation tunnel, her body hidden behind a stone wall. He hints that other bodies may lie in the connected pond. Fueled by fear, Raymond fashions a makeshift bomb to dredge the pond and uncover the truth.

The bomb detonates in the orange orchard, sending debris flying and triggering a panicked scramble. The blast heightens the sense that the house conceals dark secrets. Afterward, the family deals with the chaos and the mystery deepens.

David sneaks into the cellar and discovers a woman's body stuffed inside a refrigerator, the same person he glimpsed at the swimming pool earlier. The grandfather confronts him at the top of the stairs, and the family atmosphere of safety collapses. The chilling discovery confirms that the grandparents are hiding a lethal secret.

The grandfather confronts David at the top of the staircase, and David senses that speaking out will bring danger to all of them. He remains silent, wary of the consequences. The tension between them deepens as the truth begins to surface.

David flees to the attic as the grandfather follows; he clambers onto the roof to escape. In the pursuit, David accidentally cuts the house's phone line, cutting off contact with the outside world. Night falls, leaving the children isolated and vulnerable.

Kenny arrives to take Lynn on a date, briefly pulling the family away from the danger. The car in the orchard becomes stuck after rolling over an old pipe drain, forcing Lynn to go back inside to fetch a jack. This moment of normalcy quickly gives way to escalating peril.

Inside the large truck in the garage, the handcuffed woman is found alive and claims she is being kept prisoner to warn the children about the house. She explains she has escaped danger and urges them to leave, but the moment spirals into violence as she attacks David. The siblings seek safety as danger closes in.

A police deputy arrives with the kids and escorts them back to the house. He reveals that the woman is actually their mother who had escaped from a Jamestown psychiatric hospital. Before he can take action, the mother fatally stabs the deputy, forcing the children to flee again.

David fires a shotgun at the front door during the chaos, accidentally hitting Kenny in the abdomen. Police search for the missing deputy but cannot locate the woman. David is hospitalized for head injuries and later escapes to return to the grandparents' home.

David travels back to the house and follows his grandfather as he carries his incapacitated mother through the orchard toward the basement. There, he learns that his mother and grandfather have an incestuous history. In a fit of rage, David defeats and kills his grandfather with an axe, avenging his mother.