This discworld novel is about vampires.

The former witch Magrat is now queen and has just born a girl. There shall be a large celebration and King Verence and Magrat have invited many guests. King Verence thought it was a good idea even to invite some vampires because of diplomatic reasons. But the vampires have other plans and want to rule Lancre themselves.

Only the witches notice what's happening and try to get rid of the yampires.

This was again a rather funny discworld novel, not the one I would say I liked best but still good.

Das Buch ist auf dem Weg zu linguistkris.

This book cleverly bypassed the computer and proceeded straight to the bedside table to be read right away, but now that it's done, it allowed me to finally journal it.
Since I had only just read the Tiffany Aching books, it was great to encounter the early Nac Mac Feegle here (albeit wearing smurf hats?), and of course it is always a pleasure to meet the witches.
I think it has become apparent by now that I prefer the later Discworld novels over the very earliest ones, but I assume this one can safely be counted as a "later" book: The characters and locations are firmly established, and there certainly is room for the occasional moral message. I love the world view expressed here, and would like to interpret is as a comment on the labour market.