Frederick Loren: What husband hasn't wanted to kill his wife at some time during their marriage?
Frederick Loren: The caretakers will leave at midnight, locking us in here until they come back in the morning. Once the door is locked, there's no way out. The windows have bars that a jail would be proud of, and the only door to the outside locks like vault. There's no electricity, no phone, no-one within miles, so no way to call for help.
Watson Pritchard: Like a coffin.
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.
Frederick Loren: It's almost time to lock up the house and then your party will really begin. I wonder how it will end.
Annabelle Loren: Oh, I'm sure we're not going to go running around the house shooting each other, aren't you?
Frederick Loren: Don't let the ghosts and the ghouls disturb you, love.
Annabelle Loren: Darling, the only ghoul in the house is you.
Lance Schroeder: If I were gonna haunt somebody, this would certainly be the house I'd do it in.
Annabelle Loren: You're in danger here - we all are.
Nora Manning: From who?
Annabelle Loren: I hope for your sake you never find out.
Frederick Loren: Wasn't there a man who threw his wife into a wine vat or something?
Watson Pritchard: That was in the cellar. There's been a murder almost everywhere in this house.
Watson Pritchard: Throw these guns away, they won't be any good.
Dr. David Trent: I agree with Pritchard, although not for the same reason.
Annabelle Loren: My husband is sometimes insane with jealousy. Nothing matters to him.
Lance Schroeder: Would he hurt you?
Annabelle Loren: He would kill me if he could.
Frederick Loren: Don't stay up thinking of ways to get rid of me, it makes wrinkles.
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.
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: Dr. Trent, don't you approve of our little party favors?
Dr. David Trent: Suppose Nora had a gun when she was alone in the cellar with the blind woman?
Ruth: Oh, I don't think anyone else is going to walk around in total darkness.
Annabelle Loren: Oh, I'm sure we're not going to go running around the house shooting each other, aren't you?
Dr. David Trent: Who knows? Fear can make people do amazing things.
Frederick Loren: It's a pity you didn't know when you started your game of murder that I was playing, too.
Watson Pritchard: Four men have been murdered in this house, and three women.
Dr. David Trent: You certainly plan your parties very well, Mr. Loren, four of us are men, three are women, there's a ghost for everybody.
Frederick Loren: Mr. Pritchard here promises us genuine ghosts.
Watson Pritchard: Seven now. Maybe more before morning.
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.