Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Scary, witty, memorable characters and great plot!!

Professor Childermas, John Dixon, and Fergie take a trip to Maine. They are visiting the Professor's dead brother's mansion when they stumble onto a plot involving a strange poem, a crazed wizard and a set of grotesque little ivory chessmen. It's a must read!! With a scary tone and witty comic relief. The characters are fantastic and the plot is superb!!!