I know exactly how it was.

5 seconds sound clip from the The Tingler (1959) movie soundboard.

You can hear this line at 01:09:51 in the Blu-ray version of the movie.

Quote context

[...]

- You killed her.

- No, I didn't. I didn't.

- Your wife was frightened to death with this. And this.

- Where is she? What did you do with her?

- You're lying!

- You don't know how it was with her. She would've killed me if she could've. She tried to lots of times. You don't know how it was.

- I know exactly how it was.

- What are you going to do, Doc?

- First, I'm going to put The Tingler back where it came from. So that if it can die, it will. And then I'm gonna call the police.

- It broke out of the box!

- What's that?

- It's just a loose board. I've been meaning to fix it.

[...]