From her expression, something must have terrified her just before she died. You haven't any idea what it was?
10 seconds sound clip from the The Tingler (1959) movie soundboard.
You can hear this line at 00:54:19 in the Blu-ray version of the movie.
Quote context
[...]
- It must have been about one o'clock, Doc.
- Age?
- Was there any sign of a struggle?
- No, there was nothing. She was just lying on the bathroom floor.
- There wasn't anything unusual about the room at all?
- No. Just the way it always is.
- Everything was locked. There was no sign of anyone having been there.
- She's not alive. Something frightened her to death. She's been dead for over an hour.
- Sure, Doc, sure. Anything you want.
[...]