Paul Gerard and Lt. Columbo in “Unfinished Business”

Paul Gerard

When did you first suspect me?

Lt. Columbo

Well, after it happened, sir, about two minutes after I met you.

Paul Gerard

That can't be possible.

Lt. Columbo

Oh, you made it perfectly clear, sir, the very first night when you decided to come to the restaurant directly after you were informed that Vittorio was poisoned.

Paul Gerard

I was instructed to come here by the police.

Lt. Columbo

And you came, sir.

Paul Gerard

Yes.

Lt. Columbo

After eating dinner with a man that had been poisoned. You didn't go to a doctor. You came because the police instructed you. You didn't go to a hospital. You didn't even ask to have your stomach pumped. Mr. Gerard, that's the damnedest example of good citizenship I've ever seen.