The People in the Trees

I'm reviewing this six years after reading it because it still affects me, which is probably the marker of a technically very good book. It was just SO extremely viscerally upsetting that I had a really strong aversion to it after reading it, and I honestly still do, six years later - if I see even another book by the same author in a bookstore I will feel uncomfortable. I've never had this kind of reaction to a book be so strong and last so long before, and I read a lot of upsetting books, I don't know what it was about this one.

Again probably important and since it was semi based on a true story I think?, even more so, just good to know going into it that it is very intense and upsetting.