Lt. Columbo and Gordon in “Unfinished Business”

Lt. Columbo

Uh, I'm sorry. I was, uh, I was just thinking about something.

What was that?

Lt. Columbo

No, it's nothing important. It's, uh, Dr. Flemming, he didn't call to his wife when he came back to his apartment.

I don't follow you.

Lt. Columbo

Oh, well, I was in the bedroom. I was checking some things and I heard him open the front door and he didn't say anything. Gee, it's funny how people are different, isn't it? Now you take myself. When I come home from a trip, uh, first thing I do is I say, "Honey, you here?"

[annoyed] Exactly what is your point, Lieutenant?

Lt. Columbo

Point? Well, I wasn't making a point.