HOME FOR THE HOLIDAYS

A wealthy invalid, Benjamin Morgan, believes his second wife, Elizabeth, is trying to poison him. Alex, his daughter, believes him. Thus, she summons her three sisters—Freddie, Jo, and Chris—to the Morgan farmhouse for Christmas. When they arrive, Mr. Morgan calls them to his room and urges them to kill their stepmom before she kills all of them.

Later, as Elizabeth prepares dinner, Freddie's screams are heard from upstairs. The sisters find a drunken Freddie clutching a glass of vodka in one hand, with a shard of glass cutting into her other hand. They calm Freddie before putting her to bed. Later that night, a rainstorm begins. Jo, who has had enough of this reunion, asks for the loan of Alex's car to travel to the local train station. After bidding all goodbye, she approaches the car and suddenly becomes victim to a mysterious figure in a yellow rain slicker, wielding a pitchfork. Later that evening, Freddie continues to drink profusely, eventually passing out in a warm bath. Soon, the intruder in the yellow slicker appears and drowns her in the tub.

The next morning, Chris discovers Freddie's body in the tub. Alex accuses Elizabeth of poisoning Freddie, a claim she denies, while Benjamin initially assumes Freddie committed suicide. Chris dials the police, but the phone line is dead. She then embarks through a wooded area to use a neighbor's phone. On the way, she is trailed by the figure in the yellow slicker. After eluding her nemesis, she returns to the Morgan farmhouse. Upon arriving, she sees Alex's car still inside the barn. While investigating, she stumbles upon Jo's dead body. Elizabeth appears suddenly from outside, telling her to come with her. Instead, Chris panics, runs inside the house, locks the door, and discovers Benjamin dead.

Chris screams, bolts from the house, and flags down a passing car—which turns out to be driven by Alex. Chris explains that Elizabeth has murdered everyone, but Alex confesses she is the actual killer. Suffering from childhood persecution fantasies resulting in resentment of her siblings, Alex handily set up stepmother Elizabeth as a patsy. She then assaults Chris with a tire iron, her body falling down the hill and out of sight. Hoping to complete the frame-up on Elizabeth, Alex invites investigators to accompany her to the farmhouse. However, Alex sails into hysteria upon seeing Chris still alive. Chris watches the police lead Alex away. In the end, Elizabeth is left to tend to the Morgan farmhouse alone.

Alex, revealed as the killer, is apprehended after attempting to frame Elizabeth and assaulting Chris, who survives. Elizabeth is left alone at the farmhouse.

The film closes with the exposure of Alex's resentment-fueled murders and her failed attempt to implicate her stepmother. Chris's survival thwarts Alex's plan, leading to Alex's breakdown and arrest. Elizabeth, initially cast as a villain, is vindicated but left in isolation, underscoring the film’s grim take on family and paranoia.