- What is it, then?
- Nothing supernatural, I'm sure. I can't believe that. I'm a scientist.

5 seconds sound clip from the Fiend Without a Face (1958) movie soundboard.

You can hear this line at 00:34:33.055 in the Blu-ray version of the movie.

Quote context

[...]

- Well, it was an expression of complete horror. Fright. Almost insane, I guess.

- What is it?

- Did you get him?

- What gives?

- Okay, fellas, okay.

- Was it him?

- No, just a false alarm. That's all.

- As you said yourself, sir, the people here are simple and superstitious. Maybe they're not so wrong after all.

- What do you mean?

- Mmm, about the supernatural. Something unreal, something never seen by anyone before.

- I can't accept that. I've always disproved such theories.

- What is it, then?

- Nothing supernatural, I'm sure. I can't believe that. I'm a scientist.

- You've made a study of psychic phenomena, haven't you?

- I tell you, it can't be that! It can't be!

- Professor, you know what Doctor Bradley said.

- Was it absolutely necessary to upset the professor?

- It's nothing, nothing, Barbara.

[...]