Flemming and Lt. Columbo in “Unfinished Business”

You know, sometimes I get the impression you think I killed my wife.

Lt. Columbo

You? Oh no, Doc. How could you? You were out of town.

I'm glad you remembered that. Unless you think I hired someone to kill her. The boy who confessed, maybe I paid him to do it.

Lt. Columbo

No, Doc. You didn't do that.

How do you know?

Lt. Columbo

I already asked him.