It would take considerable power to keep the intruder behind this door.

3 seconds sound clip from the Attack of the Crab Monsters (1957) movie soundboard.

You can hear this line at 00:29:33.268 in the DVD version of the movie.

Quote context

[...]

- Well, all I can say is why wasn't I invited to the party?

- Not funny, eh? Well, that's as it should be.

- Do you think you can fix it?

- Fix it? I'll need a whole new outfit from the bottom up.

- You have parts? Enough to build a new one?

- I don't know.

- Why do you suppose it didn't come through the door and get us, Karl?

- I don't know, I can only guess.

- It would take considerable power to keep the intruder behind this door.

- There is power in the lighting in the living room.

- You mean it's afraid of electricity?

- I think so.

- Have you any other ideas?

- Once upon a time, there was a mountain.

- Hmm?

- Yesterday, when we came to this island, there was a mountain out there. Today there's no mountain.

- I am not surprised.

[...]