Carpe Jugulum - Pratchett Terry

The Discworld is very much like our own – if our own were to consist of a flat planet balanced on the back of four elephants which stand on the back of a giant turtle, that is... In this life there are givers and takers. It's safe to say that vampires are very much in the latter camp. They don’t have much time for the givers of this world – except perhaps at mealtimes... Welcome to Lancre, where the newest residents are a thoroughly modern, sophisticated vampire family. They've got style and fancy waistcoats. They're out of the casket and want a bite of the future. Everyone knows you don't invite vampires into your house – unless you want permanent guests – nonetheless the King of Lancre has invited them to stay and celebrate the birth of his daughter. Now, these vampires have no intention of leaving... ever. But they haven’t met the neighbours yet. Between the vampires and their next meal stand the witches of Lancre: Granny...