Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Darkness in the Gilded Era

You are irresistibly drawn into this book, especially if you are a fan of murder mysteries, New York history, psychological thrillers, crime fiction or all of the above. Caleb Carr is one of the few writers to tackle late 19th century New York culture and crime with convincing authority. As dark, dangerous, and alluring as any of the dives he describes.