- What's that?
- It's Asta. He's scratching on the cement around the worktable.

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

You can hear this line at 00:40:39 in the radio play.

Quote context

[...]

- Come on.

- Where to now?

- There's an old desk up along that wall. I want to take a look at it.

- What do you expect to find?

- Darling, if I knew what I'd find, I wouldn't be...

- Nick! What is it, Nick?

- Just a loose board, I guess.

- It sounds like somebody was walking over that way.

- No, just your imagination. There's no one here but us.

- No? What about Wynant? It's his workshop. Why couldn't he be hiding out here?

- What's that?

- It's Asta. He's scratching on the cement around the worktable.

- Asta! Stop it! Stop it! Did you hear what I said, Asta?

- Look at him! He's after something! I've seen him scratch the ground like that when he was looking for...

- Look at this, new cement. Listen... It's hollow! I wonder if I could find something to dig it up?

- There's an iron bar on the table. I just saw it.

[...]