It was a still night, tinted with the promise of dawn. A crescent moon was just setting. Ankh-Morpork, largest city in the lands around the Circle Sea, slept.
On the one hand, those parts of the city which normally concerned themselves with, for example, selling vegetables, shoeing horses, carving exquisite small jade ornaments, changing money and making tables, on the whole, slept. Unless they had insomnia. Or had got up in the night. as it might be, to go to the lavatory. On the other hand, many of the less law-abiding citizens were wide awake and, for instance, climbing through windows that didn't, t belong to them, slitting throats, mugging one another, listening to loud music in smoky cellars and gener,erally having a lot more fun. But most of the animals were asleep, except for the rats. And the bats, too, of course. As far as the insects were concerned . . .