Frederick Loren: Don't let the ghosts and the ghouls disturb you, love.
Annabelle Loren: Darling, the only ghoul in the house is you.
Frederick Loren: It was my wife's idea to have our guests come in funeral cars. Her sense of humor is, shall we say, original? She's so amusing. I dreamed up the hearse, it's empty now but after a night in the house on Haunted Hill, who knows?
Annabelle Loren: Oh, I'm sure we're not going to go running around the house shooting each other, aren't you?
Frederick Loren: This is Lance Schroeder, a test pilot. He's no doubt a brave man, but don't you think you can be much braver if you're paid for it? And I happen to know that Lance needs the ten thousand I'm giving, if he's brave enough to stay all night.
Frederick Loren: Would you adore me as much if I were poor? No, all you want to be is a lovely widow.
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.