[Dana, possessed by "The Gatekeeper," answers the door]
Dana Barrett: Are you the Keymaster?
Dr. Peter Venkman: Not that I know of.
[She slams the door in his face. Venkman knocks again]
Dana Barrett: Are you the Keymaster?
Dr. Peter Venkman: Yes. Actually I'm a friend of his, he asked me to meet him here.