- Chief Inspector Parker: And how's the investigation going? Found out anything?
- Lord Peter Wimsey: [Chuckles] Oh, I certainly have. I have found out that the truth in advertising is like leaven hidden in the three measures of meal. It produces a quantity of gas with which to blow out a mass of crude misrepresentation into a form that the public can swallow.
- Mr. Willis: If you'll take my advice, you'll leave Dean and his precious friends alone, or you won't make yourself too popular.
- Lord Peter Wimsey: You know, that could almost sound like a threat.
- Mr. Willis: The best thing Dean ever did in his life was to fall down that staircase.
- Lord Peter Wimsey: [Quoting Shakespeare] Nothin' in his life became him like the leavin' of it.