(KNOCK DOOR) Come in.
4 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.
You can hear this line at 00:29:35 in the radio play.
Quote context
[...]
- I'm sure he's a very nice man. I just think he might prefer to be left alone.
- Why would he want to be left alone?
- Don't forget to brush your teeth.
- Do you have a flashlight I might borrow for tonight?
- Oh, sure... It's a real Boy Scout one.
- The light in my room went out.
- See you tomorrow. Better get into bed now.
- Gee, I wonder if the batteries are any good.
[...]