Out of all the worlds Sanderson has created, the Mistborn series is my favourite. That being said, when I received word that a fourth book was to be added to the serious, I was dubious. I thought the story had been wrapped up nice and neat, but I was pleasantly surprised with how Sanderson added and changed the Mistborn world. Even though the world has been put back to normal--the weather is normal, there's no ash falling from the sky, and, as far as we know from this book, slavery does not exist anymore--the mistborn world is still plagued with many of the same social problems it was before the Lord Ruler was defeated. Since religion was always a main focal point of the series, I was very interested to see how it had evolved in the centuries since the death of the two heroes Vin and Ellend. I hope that Brandon Sanderson continues to write Mistborn novels.