Most Vampires get their own feed and don’t care who they get it from. But for the highest Lords of the Vampire hierarchy they have little time to go about the process of obtaining blood and prefer some of a good source, so they get their Quartermasters to take blood of good quaility from important victims.
He is fat, kind, witty and against violence. The last person you would expect to be a vampire
Not all vampires in the land of the dead are bloodthirsty killers that want to take over the world. Some are satisfied with immortality and want to spend an eternity without strife in seclusion away from contant war with the humans.
After the PCs defeat (or force the rapid retreat of) a villanous necromancer/demon summoner, they discover a book. This book outlines how to summon a demon whose power increases according to the size of the summoning circle used to summon it. And after the PCs examine a map of the country, they find that the layout of the cities and roads match up with the required summoning circle. In fact, the final road that would complete the circle is currently in construction.
With anyone who can find out about the circle and the ritual to summon the demon able to somehow make the final road/line, and destruction of the cities and roads currently in existence out of the question (unless this is an evil campaign- that removes the moral quandary), how are the PCs going to solve this problem?