[Okay, that's a good place to start. Kaneki nods a little, gesturing for Yu to follow him over to the Young Adult fiction section, over to where the likes of things like Sherlock Holmes could be found if one looked enough.]

All of the Sherlock Holmes books are good; they're classic mysteries. I'm a big fan of Edgar Allen Poe's work, too. It combines horror with mystery...I think you might like his short story called The Black Cat.