The Fifth Elephant is the fifth of the Discworld novels about the City Watch by Terry Pratchett [reviews of the others here].
Plot:
Sam Vimes gets send to Überwald on a diplomatic mission by the Patrician. Überwald is the home of the dwarfs, the vampires and the werewolves. Things are brewing in Überwald – a new dwarf Low King is about to be throned, the werewolves are planning something and Angua and Carrot get mixed up in all of this as well.
I liked the Fifth Elephant – Sam Vimes as a diplomat is always an awesome sight. Though I don’t think that it’s the best book in the series, it’s not the worst either. Getting a look at society in Überwald was also really cool.