is the actress who played the mother in the poltergeist
Heather O'Rourke (December 27, 1975 â February 1, 1988) was an American child actress. She was discovered at the age of five by director Steven Spielberg while eating lunch with her mother at the MGM commissary.pielberg cast her as Carol Anne Freeling in the 1982 horror film Poltergeist, where she had the movie's most recognizable line: They're here!. She reprised the role in the second and third installments.