- May I help you, sir?
- This key, what's it for?

3 seconds sound clip from the Kiss Me Deadly movie soundboard.

You can hear this line at 01:26:36.535 in the Blu-ray version of the movie.

Quote context

[...]

- So if you want this key, pay.

- No more.

- Suit yourself.

(Man screaming in pain)

- H.A.C.

- You wait here. I'll be right out.

(Reception bell dings)

- May I help you, sir?

- This key, what's it for?

- Are you a member, sir?

- No. Just tell me about the key.

- Pardon me, sir. If you're not a member...

- My dear sir.

- Now tell me about the key!

- It's a locker key, sir.

- Whose?

- Just a minute, sir.

- It's, uh...

- Well, whose?

- It's, uh, Nicholas Raymondo. Ten-year membership, sir.

- Take me to it.

- Yes, sir.

[...]