Instruct: Classify a review into positive or negative sentiment.
Query: One of the best Fantasy books I've read in years

Dickinson has a knack for description, and a grasp on the subtlties of characterization that will take your breath away. As the blurb says, this book hides a secret within itself, so I won't give away any of the plot here. You could take my advice and read it, or you could disregard this review and miss out. It's your choice.