Hush, Hush, Sweet Charlotte
That movie came out when I was about 4 years old. I think my parents saw it at the drive-in with us kids "asleep" in the back. What I saw freaked me out and I've never tried to watch it since. The theme song still gives me the willies.
It would seem that if it is not spelled out for a viewer, it's a "plot hole" or "doesn't make sense". Sometimes that's the case but often, a few seconds of thought can "fill in the blanks" quite nicely and is actually, to me, a rewarding part of the movie watching experience.
Then again, I'm not a critic. Just a fan.