- You'll have to use a different tone if you expect me to believe that.
- All right, I'll bring home an affidavit tomorrow if...

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

You can hear this line at 00:24:37.736 in the Blu-ray version of the movie.

Quote context

[...]

- Hello, little bossy. Where's big bossy, huh?

- Here.

- Hello, darling.

- Hello.

- What's... Look at this. Expecting company or something?

- Al and Marge are coming to dinner.

- Come, Daddy. Help me build the roof.

- You'd better shower. And get some cocktails ready.

- You look down in the dumps.

- It's nothing much.

- Is it a case?

- I told you, it's nothing.

- You'll have to use a different tone if you expect me to believe that.

- All right, I'll bring home an affidavit tomorrow if...

- I'm sorry. I'm sorry, baby.

- It's all right. You're entitled to let off steam.

- Ah, it's just a letdown. I don't know, I guess it's a kind of an occupational disease with cops.

- You know that girl that phoned, that Lucy Chapman? Well, she's a case now. County homicide.

- I'm sorry, darling. I'm...

- It's all right, darling. Daddy will help you build even a bigger one.

[...]