Oh yes! Of course. Your father was having some trouble with one of his inventions a few years ago. I handled the case for him.

8 seconds sound clip from the The Thin Man (1936) classic radio play.

You can hear this line at 00:04:41 in the radio play.

Quote context

[...]

- I thought I recognized you. My name is Dorothy Wynant.

- Oh yes? How do you do?

- Do you mind if I sit down for awhile?

- No, but I expect my wife in a few minutes if you don't mind explaining your presence to her.

- Of course! That's my fiancé over there at the other table.

- Oh, well that makes everything all right, doesn't it? Sit down!

- Thank you.

- Your name is...

- Dorothy Wynant. I'm Clyde Wynant's daughter.

- Oh yes! Of course. Your father was having some trouble with one of his inventions a few years ago. I handled the case for him.

- Yes, I know. That's why I want to speak to you now.

- Well, I'm not practicing anymore. You see, I retired.

- Please Mr. Charles. I need you.

- Oh? what seems to be the trouble?

- It's Dad. He went away about three months ago and I haven't heard from him. Not a word. I'm worried sick.

[...]