This is truly the point at which the story matures—in many senses. While the previous books retained their youthful innocence, this book solemnly lifts the Wizarding World to a whole new level. It is a world apart from the rather half-baked, borderline first books, which relied too much on clichees.

Book six is the maturity of the story: for the epic mystery that is finally lifted; for the gloomy prospects ahead. But also for Harry himself, as he finally gets drowned in teen drama. And lastly, it's the maturity of Rowling's writing. Her earlier books were nowhere near these later masterpieces. She has definitely learned a lot in the process of writing five books and here, in the sixth book, it finally shows.