Cerulean Sins ~ Laurell Hamilton

This is the eleventh book in the Anita Blake series. Belle Morte, the head of Jean-Claude's line of vampires has learned that Anita has inherited the Ardour, and wants to send her representative, Musette to visit. When Musette arrives 3 months earlier than expected, things start to fall apart, they have to make sure everyone is safe from the machinations of the visiting vampires. And Anita has been called in to consult on a serial murder case, that appears to have been committed by a werewolf. But it appears that Dolph is losing control of his emotions and may not let Anita help.