Corrected entry: Towards the end, Kristen's clothes have reverted back to the opening scene's dress from the wedding they attended. She had changed into jeans and some type of overshirt while he's out getting cigarettes; towards the end this shirt rides up a bit as 'the stranger' is dragging her down the hall. The final scenes show them sitting tied up for their final moments and she's inexplicably back in the party dress.
Corrected entry: When the masked male killer is dragging Kristen down the hall at the ending of the film, the absolutely dead Mike's fingers twitch.
Corrected entry: The candles never burn down the entire movie. They stay the same height, and never have any wax running down them as if they were just lit.
Corrected entry: James goes to town to get his girlfriend cigarettes because she says she only has one left. Later in the movie, while he is still gone, she goes to light up and there are three cigarettes left in her package.
Corrected entry: During the scene where the killer tries to enter the house with an axe, he uses it to chop a hole in the door which they try to block with a piano (and a pointlessly thrown chair), but later when his friend comes to the house to pick him, he walks in the front door and the hole is gone and so is the piano.
Corrected entry: At the beginning of the movie, Kristen is wearing her party dress. Once she has a bath, she changes into jeans and a plaid shirt. At the end of the movie when The Strangers have attacked her and James, she's wearing the dress again.
Corrected entry: When James is putting in a porch light, he only puts a light bulb in one porch lamp. When it shows a whole front shot of the house there are two porch lights lit.
Corrected entry: Follow the Champagne bottle. Opened at the dining room table; sipped from, then thrown away by James on the front lawn; pointedly focused on near the end of the movie - on the dining room table. Maybe the strangers brought it back into the house for recycling?
Corrected entry: In the scene where James walks out to the car to get his phone, the car is running with the lights on. He takes the car keys out of his pocket, presses the security button on the key ring and then puts the keys between his fingers as a weapon.The car is not hotwired - the loose cables are where the phone charger was ripped out. So how is the car able to run without the keys?