- Dr. Joan: Do you think less of me?
- Lt. Columbo: I'm only a policeman. Judging people... that's all up to somebody else, but I can tell you that I've enjoyed our talks very much, and I think I do understand.
- Dr. Joan: Could I bring you something to drink?
- Charlie: Uh, sure, could you manage some sparkling mineral water?
- Dr. Joan: I think so...
- [to Columbo]
- Dr. Joan: Same for you, Lieutenant?
- Lt. Columbo: Oh, no, thank you, Ma'am. I'll just have some seltzer.
- Lt. Columbo: Well, but when you get right down to it, Ma'am, only one woman came in, and only one woman went out, and whatever all this means, we have to look at the lady in black, and when we find her, I promise yuh, you're gonna be the first to know!
- Helen Hendrix: [at the charity reception] Go circulate! Get money for music!
- Dr. Joan: Married women circulate - single women mingle.
- Party Guest: I'd spend the rest of my life just watching you walk toward me.
- Dr. Joan: Thank you. Now you can watch me walk away from you.