You’ve probably heard of this book, it’s more or less sequel to To Kill a Mockingbird.
And it’s pretty disturbing. Turns out that Atticus Finch is a massive racist, and a surpriisngly horrible person. This novel could well have opened up a rich new vein of horror, being disillusioned about your childhood idols. Seeing Atticus Finch turn out to be a jerk would be like learning that Santa Claus committed eats children’s dogs.