Rachel Caine - The Morganville Vampires

Lord of Misrule (The Morganville Vampires #5) 

by Rachel Caine

In the college town of Morganville, vampires and humans coexist in (relatively) bloodless hormony. Then comes Bishop, a master vampire who threatens to abolish all order, revive the forces of the evil dead, and let chaos rule.
But Bishop isn't the only threat.
Violent black clouds promise a storm of devastating proportions. As student Claire Danvers and her friends prepare to defend Morganville against the elements - both natural and unnatural - the unexpected happens: Morganville's vampires begin to vanish one by one. Discovering why leads Clare to one last choice: swear allegiance to Bishop...or die.