Dr. David Trent: Nora, I think you're a little upset. Would you care for a sedative?
Nora Manning: Get out! Get out all of you! All of you get out and leave me alone! Just get out of here.
Frederick Loren: Pritchard, I've had enough of your spook talk.
Watson Pritchard: What's the use of saying, "Good night"?
Frederick Loren: Don't stay up thinking of ways to get rid of me, it makes wrinkles.
Frederick Loren: I am Frederick Loren, and I have rented the house on Haunted Hill tonight so that my wife can give a party. She's so amusing. There'll be food and drink and ghosts, and perhaps even a few murders. You're all invited. If any of you will spend the next twelve hours in this house, I will give you each ten thousand dollars, or your next of kin in case you don't survive. Ah, but here come our other guests.
Chosen answer: As far as the "gliding in and out", Mrs Loren presumably uses the same body harness she used to fake her hanging. As to the rope... the film is deliberately ambiguous on whether or not the ghosts are real, as evinced by the drunk's last line in the movie; the rope trick is probably supposed to reflect this ambiguity despite being Mrs Loren's trickery.