I'm sorry. Sorry.
4 seconds sound clip from the Poltergeist (1982) movie soundboard.
You can hear this line at 01:16:05 in the Blu-ray version of the movie.
Quote context
[...]
- Look, we haven't heard Carol Anne since last night.
- Why is this door locked, Mr. Freeling?
- I am.
- That's the room my son and daughter used to occupy.
- We believe it's the heart of the house.
[...]