- D.C.I. Adams: [Telling Hetty his priorities regarding the poison pen letters] Anyway, it isn't a case for forensics. It's not logical - it's psychological. Twisted motives. Think laterally. Don't get me wrong, Mrs. Wainthropp, I'm delighted you're taking it on, but, to tell you frankly, you're on a highway to nothing.
- Hetty Wainthropp: [Speaking about the disgraced schoolteacher] You seem to know a lot about him.
- Helga Allowby: Knowing about people is my hobby.