Terry Pratchett 
Guards! Guards! 
A Novel of Discworld

Welcome to Guards! Guards!, the eighth book in Terry Pratchetts legendary Discworld series.Long believed extinct, a superb specimen of draco nobilis (noble dragon for those who dont understand italics) has appeared in Discworlds greatest city. Not only does this unwelcome visitor have a nasty habit of charbroiling everything in its path, in rather short order it is crowned King (it is a noble dragon, after all…). How did it get there? How is the Unique and Supreme Lodge of the Elucidated Brethren of the Ebon Night involved? Can the Ankh-Morpork City Watch restore order and the Patrician of Ankh-Morpork to power?Magic, mayhem, and a marauding dragon…who could ask for anything more?