Why are you asking all this?
3 seconds sound clip from the The Exorcist movie soundboard.
You can hear this line at 01:13:50 in the Blu-ray version of the movie.
Quote context
[...]
- Watch out for drafts. A draft in the fall when the house is hot is a magic carpet for bacteria.
- Excuse me, madam. Anything else?
- No, Karl, we're fine. Thank you.
- Why are you asking all this?
- The deceased comes to visit, stays only 20 minutes... and leaves all alone a very sick girl.
- And speaking plainly, Mrs. MacNeil... it isn't likely he would fall from a window.
- Besides, a fall wouldn't do to his neck what we found. Except maybe one chance in a thousand.
- No. My hunch... My opinion... he was killed by a very powerful man: point one.
[...]