Commander Vimes is on a case that takes him all around Discworld.
"Everyone knows that the world is flat, and supported on the backs of four elephants. But weren't there supposed to be five? Indeed there were, and what happened to the fifth elephant is only one of the many perplexing mysteries solved ... The Fifth Elephant begins, like so many of Pratchett's satirical inventions, with an invitation. This one is both royal and engraved, requiring that Commander Vimes of the Ankh-Morpork constabulary attend as both detective and diplomat. ... Where cops (even those clad in tights) go, crime, of course, follows--and an attempted assassination and theft soon lead to a desperate chase from the low halls of Discworld royalty to the legendary fat mines of Uberwald"--Jacket.