The Morganville Vampires, Volume 3 (The Morganville Vampires #05, #06)

Lord of Misrule
In Morganville, violent black clouds promise a storm of devastating proportions. As student Claire Danvers and her friends prepare to defend Morganville against the elements the unexpected happens: Morganville's vampires begin to vanish. Discovering why leads Claire to one last choice: swear allegiance to the evil master vampire Bishop- or die...

Carpe Corpus
An underground resistance is brewing, and in order to contain it Bishop vows to obliterate the town and all its inhabitants. Claire and her friends are the only ones who stand in his way. But even if they defeat Bishop, will the vampires go back to the old rules, after having such a taste of power?