Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Forensics comes to Discworld

I've always had a particular affinity for the Discworld books featuring Sam Vimes and his Watch. Whether it's Vimes, with his dogged determination to see justice served or Carrot, a true believer in the good in all (Sometimes they just need some help finding it and Carrot is always there with a helping hand and a werewolf girlfriend.), these characters seem to bring out the best in Pratchett. This one introduces a dwarf named Littlebottom who has been asked to leave the Guild of Alchemists and who is now brought in by Vimes to discover what's behind the white substance at the scene of a few murders and what's killing Lord Vetinari. With Littlebottom hiding a secret as well, this proves to be a great mix of an interesting mystery, a discussion on the nature of religion and free will and...golems. Have fun.