Cerulean Sins ~ Laurell Hamilton

This is the eleventh book in the Anita Blake series. In this book, the vampire at the head of Jean-Claude's line has sent a representative to visit with Jean-Claude, she arrives three months early and totally unexpected, and this causes many problems. We deal with the visiting vampires, as well as Richard's issues with himself and his beast, as well as a serial murderer loose in St. Louis. Anita is also learning to deal with and control the Ardeur, which is what makes Anita a form of Succubus, it is a need she gained when she and Jean-Claude married the marks of her being his human servant.