I tell you, something very unpleasant is going to happen here tonight.

3 seconds sound clip from the The Mummy (1959) movie soundboard.

You can hear this line at 00:49:53.958 in the Blu-ray version of the movie.

Quote context

[...]

- Who?

- You mean what? I tell you, it wasn't human.

- Oh, I needed that.

- Are you sure that's the first one you've had tonight?

- Have you been seeing the little people?

- If it's little people, it's the biggest little people ever you heard anything about.

- I'll have another one of those.

- I tell you, something very unpleasant is going to happen here tonight.

- Well, John, I'm going to bed. I think you should too. We'll do some more in the morning.

- Yes, of course. You must be tired, I'm sorry.

- Goodnight.

- Goodnight.

- What I don't understand, Mr Banning, is that if you hit him like you say you did, you must have killed him. You didn't do that, otherwise there would be a body. So, I must assume that you missed.

- I tell you, Inspector, I hit him, twice at least from here.

- At four yards?

- At four yards.

- I see.

- All right, let us have your impressions as to who this intruder must have been.

[...]