Ghostbusters is a 1984 American supernatural comedy film directed and produced by Ivan Reitman, and written by Dan Aykroyd and Harold Ramis. It stars Bill Murray, Aykroyd, and Ramis as Peter Venkman, Ray Stantz, and Egon Spengler, three eccentric parapsychologists who start a ghost-catching business in New York City. It also stars Sigourney Weaver and Rick Moranis, and features Annie Potts, William Atherton, and Ernie Hudson in supporting roles.
After Columbia University parapsychology professors Peter Venkman, Ray Stantz, and Egon Spengler experience their first encounter with a ghost at the New York Public Library, the university dean dismisses the credibility of their paranormal-focused research and fires them. The trio responds by establishing "Ghostbusters", a paranormal investigation and elimination service operating out of a disused firehouse. They develop high-tech nuclear-powered equipment to capture and contain ghosts, although business is initially slow.