| Director | Bryan Bertino |
|---|---|
| Budget | $9 million |
| Box office | $82.4 million |
In February 2005, James Hoyt and Kristen McKay arrive at James' isolated childhood summer home following a friend's wedding. James is reeling after an emotional Kristen rejected his marriage proposal at the reception. James calls his friend Mike to pick him up in the morning. The couple attempts to have sex but is interrupted by a knock at the door. They find a young woman asking for someone named Tamara. James dismisses her and builds a fire for Kristen.
After James goes to buy cigarettes for Kristen, the woman from earlier returns, asking the same question. Kristen dismisses her again. A masked man is seen silently watching her from inside the house. Kristen notices the smoke detector she had dropped on the floor earlier is now sitting on a chair and realizes someone is in the house. She finds her cellphone missing and is horrified when the front door is forced ajar. The young woman, now wearing a mask, peers into the house. Kristen locks the door and retreats.
James returns and reassures Kristen that nobody is in the house. They see the young masked woman, Dollface, watching from outside. James attempts to get his cellphone from their car but finds it ransacked and its tires slashed. The couple attempts to escape in the car, but are abruptly stopped when a masked brunette woman, Pin-Up Girl, rear-ends them in a pickup truck. After the Man in the Mask begins to break through the home's front door with an axe, James and Kristen hide in a bedroom with a shotgun.
Mike arrives shortly after and James, mistaking him for an intruder, accidentally shoots him dead. Distraught, James remembers an old radio transmitter in a garage on the property. James attempts to reach the garage before the Man in the Mask knocks him unconscious. After James fails to return, Kristen flees to the garage, where she witnesses Pin-Up Girl destroy the radio. Kristen returns to the house and hides in a pantry, only to be confronted by Dollface and the Man in the Mask, who incapacitates her.
The couple awakens at dawn, tied to chairs in the living room. Kristen demands an explanation for the intruders' actions, to which Dollface replies, "Because you were home." The offenders unmask themselves before taking turns stabbing the couple. They leave and come across two young boys distributing Mormon religious tracts. The boy gives Dollface one, and right before the strangers drive away, Pin-Up Girl says, "It will be easier next time." The two boys come upon the house, where they discover the bloodied bodies of Kristen, James, and Mike. When one of the boys examines the bodies, Kristen suddenly regains consciousness before grabbing his hand and screaming.