Well that was unsettling. Took me four days to come down from this movie and land in a safe enough place to be able to think about it again to write a review.
Some of the first few opening shots are filmed in such an off-putting way, that I was immediately reminded of The VVitch and I think there are some parallels in how half the audience is probably hoping it's actual supernatural forces at play, while the other half hope it's just some type of mental illness.
The performances really help sell this movie. Toni Collette does a solid job at the mother trying to figure it out (she might actually get recognition from the Oscars), while Gabriel Byrne has a commanding presence as the voice of reason.
Some disturbing imagery but lots of am-i-seeing-something-in-the-dark which personally freaks me out as I do that at home alone way too often. "Is that somebody standing in my daughter's empty room, or should I not have polished off that bottle of scotch?"
My recommendation for those that haven't seen this is to not read anything about it (other than brilliant spoiler-free reviews like this), as it's good fun trying to figure out the story on your own, and then talking about it afterwards.
I thought I was ready for this movie, but I don't think I was. I doubt you are too. I'm still affected by it. I really hope Ari Aster doesn't make more horror films, he's way too effective at it.