The final installment of the series is a wild ride, with a mostly satisfying ending. All of the cast is assembled, and the power of The Light and Dark are at their most enthralling. This book has tons of new ground it covers, with Bran and Will entering a world separate from our own, to go on a strange, fantastic, and occasionally surreal quest for the last key to the fight against The Dark. Eventually, when all of the character's strengths are needed they are all called upon, making this a true culmination of everything that came before. The final battle is fantastic, bringing to bear all of the power that the book hinted at, and fulfilling every bit of mystery that was implied throughout the series. The ending is at the same time deeply moving, and slightly disappointing. I still don't know how to feel about it, even after all these years.