Heather O’Rourke and Zelda Rubinstein are the only players from the first two films to cross over into the light of Poltergeist III. Here, O’Rourke’s character, Carol Anne, seemingly dumped by her parents for reasons unknown, is taken care of by her Aunt Patricia (Nancy Allen), Uncle Bruce (Tom Skerritt), and teenage step-cousin, Donna (Lara Flynn Boyle), living in a high-rise building in Chicago. Carol Anne has been enrolled in a school for gifted but troubled kids, as her therapist, Dr. Seaton (Richard Fire), thinks that the young girl has the ability to hypnotize people into believing her delusions about seeing ghosts. Seaton forces Carol Anne to speak about her experiences, which brings to light her involvement with the dreaded Reverend Kane (Nate Davis), and this talk has caused the late Reverend to cross over into trying to get in contact with the girl again. For some reason, the entire building is chock full of mirrors at every turn, which is convenient to the haunting that emerges, as most of its haunting involved scaring the bejeesus out of the family and their cohorts through reflections in whatever mirrors they happen to be looking at.
The story begins in the year 2122, onboard the commercial towing vessel, the Nostromo. Its mostly blue-collar crew, five men and two women, are awakened prematurely while still in deep space from their cryogenic slumber en route back to Earth. The reason for their early disturbance has to do with the company’s policy to investigate potential alien life forms, so when what appears to be an SOS signal is being transmitted from a moon in their relative vicinity, their overriding primary mission is changed to checking out the situation. Upon landing on the desolate planet, the scientists discover what appears to be eggs containing another form of life, one of which hatches and latches itself to one of the crew. Unable to remove the creature, it is brought back on board the Nostromo, where it grows at a rapid pace to become one of the deadliest killing machines humankind has ever faced. Alien would make a star out of Sigourney Weaver, and Ridley Scott one f the most sought-after directors in Hollywood.