- Brown knows I'm here, he knows I'm talking to you.
- I said nothing.
- Yeah, but Brown doesn't know that.

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

You can hear this line at 00:47:28.305 in the Blu-ray version of the movie.

Quote context

[...]

- Who paid for this shop?

- Me, Dreyer.

- You, Dreyer, borrowed the money from the Bolemac Corporation. The Bolemac Corporation is Brown, or Brown and Grazzi.

- Mr. Brown doesn't pay money for nothing. What makes you so valuable to Mr. Brown? What do you have on him?

- My name is Nils Dreyer, I live at 821 Mason Avenue. That is all I have to tell you.

- You know, Mr. Dreyer, things changed since I walked in here.

- Brown knows I'm here, he knows I'm talking to you.

- I said nothing.

- Yeah, but Brown doesn't know that.

- In exchange for information, I'll give you protection. I'll do better than that, I'll put you in jail.

- Suppose you put me in jail. The man in the next cell happens to have a gun. Boom! One dead Swede.

- Thank you very kindly, I'll remain stupid.

- How did you get in here, sir? The store is closed. I'm late for an appointment, if you'll excuse me.

[...]