It's a pretty scary book. I only reread this because I barely remembered the plot and it scared the shit out of 10-year-old me. It still scared me now but I didn't cry so that's a win.
If you're looking for something with a thorough buildup followed by a steep descent into madness, then this book is 10 billon percent for you.
However, my major gripe with the book is how the author wrote the female characters. Lex was incredibly annoying but what annoyed me the most was how Ellie was sexualised and sorta... overlooked? By other men.
Anyways I found most of the character deaths to be well-deserved so yay.