- Nobody will ever know.
- Yeah. No one but us.

6 seconds sound clip from the Ocean's 11 (1960) movie soundboard.

You can hear this line at 01:36:56 in the Blu-ray version of the movie.

Quote context

[...]

- I haven't a man to spare. I simply can't do it.

- What do you mean you can't do it?

- How did it go?

- Smooth as a peeled egg. How about you?

- Things happen that can break you up, things you don't expect, you know?

- Like what?

- Tony's dead... Heart attack, I guess. He dropped crossing the street.

- The cops got to him before we did.

- They'll check up on him.

- Sure they will. What are they going to find? Nothing.

- Nobody will ever know.

- Yeah. No one but us.

- Don't hit me on the head with that, will you?

- I'll tell the other men about Tony. Maybe if I tell them, they won't panic.

- Meantime, the plan remains the same: The money stays where it is till the heat's off. Nobody checks out until we give the word.

- You better go back to your job. I'll contact you later.

- Okay.

[...]