Patrick J. Smith’s review published on Letterboxd:
My mom always told me THE EXORCIST was the scariest movie she had seen in her life. Before today I probably would have said John Carpenter's HALLOWEEN was the scariest movie I've seen because I saw it at such a young age. Time to scrap that because HEREDITARY is the scariest/most unnerving film I have seen in my life.
I'm never clicking my tongue again.