This one feels like one for the fans, with plenty of cameo appearances and asides that do little or nothing to advance the story but do provide welcome reminders of old favourite characters, places, events and things. Steam-powered trains come to the Discworld, 'deep down' (fundamentalist) dwarfs are violently agitating, and the march towards the equal recognition of all species (aided by the tide of technological advances) continues apace, Moist von Lipwig plays impresario with Vetinari moving pieces behind him.
