- He'll be scared. Too scared to talk.
- If he's that scared, he'll listen.

4 seconds sound clip from the The Big Combo (1955) movie soundboard.

You can hear this line at 00:39:10.054 in the Blu-ray version of the movie.

Quote context

[...]

- Bettini didn't wait around to get himself killed.

- Turned honest citizen. Changed his name and went into hiding.

- Do you know where?

- I did him a favor once. I could've put him away for something he didn't do. I let it pass.

- He did deserve it, considering all the times he was guilty and I didn't have the evidence.

- Well, tell me where to find him.

- He'll be scared. Too scared to talk.

- If he's that scared, he'll listen.

- Come in.

- Not yet. Just a minute... That's all I ask, just a minute. Let me turn off the stove. It could cause a fire, lots of nice old people in the building, OK?

- I've been waiting for you a long time. You... look like such a nice young fellow.

- That Brown sure knows how to pick 'em. I would never have suspected.

[...]