- Don't worry, there'll be a payoff.
- When?

3 seconds sound clip from the The Big Heat (1953) movie soundboard.

You can hear this line at 00:37:23.544 in the Blu-ray version of the movie.

Quote context

[...]

- Why?

- I beg your pardon?

- I asked you why are you checking the files?

- Well, you've made a lot of enemies, Bannion. Relatives and friends of killers you sent to the chair.

- The motive was revenge. That's obvious.

- Is that the way it looks to you too, Lieutenant?

- Well, it's worth exploring.

- Of course, I'm only an appointed official. I haven't the training and experience you men have.

- But I am certain we'll find the answer in one of these old homicides. Wilks has eight men on it full time.

- Don't worry, there'll be a payoff.

- When?

- It's natural for you to be impatient. But these things take time.

- Sometimes they take forever.

- Now that's no way to talk.

- Why, there isn't a man in the entire department wouldn't give a month's pay to break this case.

- What about you, Commissioner? How much would you give?

[...]