I need disturbing book recommendations!

I’m currently diving into "Lord of the Flies" and "Blood Meridian," and I’m really drawn to their unsettling themes and dark narratives. I love books that challenge the psyche and evoke a strong emotional response, whether it’s through horror, existential dread, or just a stark portrayal of humanity.

If you have any recommendations for books that fit this vibe—preferably ones that stick with you long after you’ve put them down—I'd love to hear them!