Long book recommendations, not part of series

Yall do your magic and rec me some good, interesting long books NOTTT belonging to a series or anything. Just single novels. Preferred genres are horror, sci-fi, romance, true crime, mystery, but any good book will do. Also by long, I mean 400-1000 pages. Please don’t recommend some random Shakespearean play or super boring nonfiction or common sense by Thomas Paine.