Build a movie plot around this: Who haunts Dana Barrett's apartment? Dog like creature that calls "Zuul"
The answer to this question is:
The film opens within the New York Public Library, where a librarian (Alice Drummond) is first gathering books, before heading downstairs to a remote and empty section. She places a book back on the shelf, not noticing that the books behind her are levitating across the aisle. Later, she passes the card catalogue shelves as they open behind her and suddenly begin to hurl their contents into the air. Frightened and screaming, she runs through the room before being stopped by an unseen ghost, which scares her terribly. This leads into the title card.After the opening title shot, the film continues in the Paranormal Studies Dept. of Columbia University, where Dr. Peter Venkman (Bill Murray) is conducting a test on ESP with a nerdy male student (Steven Tash) and an attractive female student (Jennifer Runyon). Venkman continually flirts and lies about her abilities, while enjoying administering electric shocks to the male student. Having finally had enough, the male student departs, and Venkman continues to flirt with the young woman. Dr. Ray Stantz (Dan Aykroyd) enters, and frantically begins to tell Venkman about the sighting at the library, insisting they leave at once to check it out. Venkman makes a date with the student, and follows Stantz out.Upon arriving at the library, Venkman and Stantz meet up with Dr. Egon Spengler (Harold Ramis), and Venkman proceeds to ask a series of personal (and cynical) questions about her medical and social history, before the three head down to the area the ghost supposedly inhabits. While down there, the three men collect ectoplasmic residue, discover a tall "symmetrical stacking" of books from floor to ceiling, and narrowly escape a falling bookcase.Turning the same corner as the librarian, they see the ghost: a transparent form of an elderly lady (Ruth Oliver), reading a book. Having no idea what to do, Venkman begins to talk to the ghost as if it were a lady in a bar. She shushes him, before Stantz proclaims he knows what to do. They stealthily approach the ghost, before...