Instruct: Classify a given review as either positive or negative.
Query: Surprising, intelligent thriller with a message

Loved it. A well-written book about a dark and clever villian and his captive - a woman self-actualizing in a surprising and disturbing way. Combines a great sense of action with a moral message and humanity. Worth reading as a commentary on morality, violence, and (for lack of a better term) awakening.