Book Suggestions? (Mainly horror/thriller/mystery)

Any good book suggestions in the horror/thriller/mystery department you all know of?

During these quarantine times I’ve been on and off with my reading but also accumulating books at the same time. All suggestions are welcome, whether they be: a novel, a series, a children’s book, a comic, light novel/manga, or poetry, or even a mixture of short stories. :)

Plus All Hollows Eve is near, that’s mainly why I’m asking.