Dr Ray Stantz: Your girlfriend lives in the corner penthouse... of Spook Central.
Dr. Peter Venkman: She's not my girlfriend. I find her interesting because she's a client and because she sleeps above her covers... four feet above her covers. She barks, she drools, she claws!
Dr. Egon Spengler: It's not the girl, Peter, it's the building.
While locked up Egon and Ray explain what's happening to Dana.