observe-ance
Wow..this one blew the avant out of avant garde right down the rabbit hole. I may watch it again, so don't anyone spoil it by giving away the plot.
I will add, that viewing things that were there, and things that appear to be, but aren't; and totally disconnected happenings that may be real or not, and persons who may be there, or just someone's imagination, and eyeball close-ups and dark gurgling stuff, could have promise.