Corrected entry: The actor who played Scott didn't return with the rest of the family because he couldn't bring himself to do it because of actress Heather O'Rourke, who died shortly before the movie was finished.
Corrected entry: In the scene where Dr. Seaton is talking to the group about Chopin and shyness, you can see in the reflection of the glass that one of the other psychologists isn't wearing a suit-coat. In the next frame, he is.
Correction: There are actually 2 male psychologists behind Dr. Seaton, one of which is wearing a suit-coat and the other is not.
Corrected entry: After their session near the beginning of the movie, Carol Anne tells Dr. Seaton that she misses her parents and even her brother. Did she forget she also has an older sister?
Correction: This is a question, not a mistake. Dana could be estranged from the family (as stated in the novelisation), or Carol Ann simply doesn't miss her.
Corrected entry: When Carol-Anne opens the bathroom door to tell Donna that she looks great, in the mirrors reflection her jumpsuit buttons up to the left. In the next shot of Carol-Anne, we see her jumpsuit still buttons up to the left. (00:30:35)
Correction: That's because that reflection of her is of the parallel side. Notice she says "you look great" twice. Once is her, the other was the parallel apparition. Notice that any time something "ghostly" happens in a mirror or reflection, it is not a true reverse, such as the letters on someone's jacket. This signifies the ghosts from the real images, and was done on purpose for the film. (See other corrections for this film.)
Corrected entry: When Lara Flynn Boyle and her boyfriend (or their ghost look alike)walk down the corridor after pushing the shrink down the elevator shaft. The image of herself in the hallway is mirrored, but the image in the mirror isn't (look at the letters on her jacket). Shouldn't it be the other way around?.
Correction: That part of the movie's after the girl and her boyfriend get pulled into the mirror. They had switched places with their spiritual reflections..so the person outside of the mirror was actually the reflection of the one inside of the mirror, that is the whole point, so it was like that on purpose.
Corrected entry: When Carol Ann is left in her bedroom by her uncle and aunt, when they leave for the party, she gets up and leans against the window. Her movements aren't synchronised with the movements in the mirror at the back of the room.
Correction: This is put there on purpose to coincide with the rest of the movie, like when Carol Anne tells Donna she looks great when she isnt even in the room, or when Bruce walks away but he is still in the mirror.
Corrected entry: At the party, Aunt Trish is sitting in front of some mirrors, when one of the workers apparently knocks something over. She rises, and her reflection isn't synchronised.
Correction: The film is based on the fact that the 'spirits' are in the mirror, so throughout the whole film the mirrors aren't the same as the actual movements of the actors.
Correction: This is untrue. The actor simply never got a call back to film the final scenes. http://www.poltergeistiii.com/scott.html.
Jeff Swanson