- How goes the investigation? Have you proved the policemen are wrong?
- Not yet.
- But you will.

6 seconds sound clip from the The Third Man (1949) movie soundboard.

You can hear this line at 00:38:12.986 in the Blu-ray version of the movie.

Quote context

[...]

- Oh, they don't take army money here. How much did he say?

- How much did he say?

- Harry?

- Yes. He moved his head, but the rest is good, isn't it?

- Good evening, Miss Schmidt.

- Good evening.

- You've found out my little secret. A man must live.

- How goes the investigation? Have you proved the policemen are wrong?

- Not yet.

- But you will.

- Our friend Dr Winkel said you had called.

- Wasn't he helpful?

- Well, he was... limited.

- But Mr Popescu is here tonight.

- The Romanian?

- Yes, the man who helped carry him.

- I thought he'd left Vienna.

- He's back now.

[...]