Audio problem: When Carol Anne says "they're here" her mouth doesn't match the words.
Audio problem: When CarolAnn slides across the floor, she comments on how it feels on her butt, but her mouth doesn't move.

Directed by: Tobe Hooper
Starring: Craig T. Nelson, JoBeth Williams, Oliver Robins, Beatrice Straight, Dominique Dunne
Audio problem: When Carol Anne says "they're here" her mouth doesn't match the words.
Audio problem: When CarolAnn slides across the floor, she comments on how it feels on her butt, but her mouth doesn't move.
Revealing mistake: When the chair moves across the kitchen floor, Craig T. Nelson goes to investigate it (after it has stopped moving). He goes up to the chair and flips it over. If you look closely, Craig almost hits the camera with the chair's legs. You can tell this has happened because the camera moves up very quickly and Craig looks straight at the camera crew with very big guilty eyes. This is more easily visible on the widescreen version of the film. (00:33:30)
Carol Anne Freeling: They're here.
Trivia: In the swimming pool scene with the mother near the end, the actress didn't know it, but those weren't fake skeletons.
Question: Why was only the Freelings' house sucked into the vortex? Since it was discovered that the developer only moved the headstones but left the bodies, shouldn't other houses that were also built over the cemetery have also been dragged in?
Answer: A poltergeist haunts a person rather than a place. Though building the neighborhood over their graves is what initially disturbed the ghosts, they are fixated on Carol Anne.
Answer: It seems that the majority of the activity was focusing in on the Freeling house exclusively. It's not fully explained why they were the only house affected, but there are a number of possibilities. Possibly because it's where the highest concentration of spirits were at unrest. Possibly because it could be inferred that the Freelings moved in first given Steven was involved with the company that built the community, and thus they became the first targets. And possibly because they were trying to get to Carol-Anne since she was an easy target.
Also, it is mentioned in the movie that Carol Anne was actually born in the house. That likely caused everything to focus on her.
It was not meant that Carol Anne was literally born inside the house, just while the family was living there. It was just a casual colloquial expression Steven's boss made.
raywest ★
It was because Carol Anne was the attraction as a life force for all of these spirits that were left there. Remember all of those spirits that descended the stairs in their house?