- How do you know we're supposed to stop here?
- I know.

4 seconds sound clip from the It Came from Outer Space movie soundboard.

You can hear this line at 00:54:46.504 in the Blu-ray version of the movie.

Quote context

[...]

- I'll take you home.

- No. Take me to the mine.

- Oh, no. No, please.

- Hello? Who is this? Who? It's for you.

- This is John Putnam. What? But... Yes.

- They've got Ellen.

- Ellen? Where?

- Come on.

- How do you know we're supposed to stop here?

- I know.

- Well, let's go.

- No. They want to see me alone. You wait here.

- I was thinking about Ellen.

- So am I.

- She's safe, but if you come along, I don't know.

- All right, I'll wait. How long?

- As long as it takes.

[...]