All Together Dead - Charlaine Harris
Sookie's beginning to get used to being surrounded by all varieties of undead, changeling, shapeshifting and other supernatural beings - but even she has her limits. She'd really like to take a while to get over being betrayed by Bill, her long-time vampire lover, and get used to her new relationship with the sexy shapeshifter Quinn - but instead, she finds herself attending the long-planned vampire summit, the destination of choice for every undead power player around, as a sort-of human 'Geiger counter' for Sophie-Anne Leclerq, vampire queen of Louisiana.
But the job is fraught with difficulties. Sophie-Anne's power base has been severely weakened by Hurricane Katrina, and she's about to be put on trial during the event for murdering her king. Sookie knows the queen is innocent, but she's hardly prepared for other shocking murders: it looks like there are some vamps who would like to finish what nature started. With secret alliances and backroom deals the order of the day - and night - Sookie must decide which side she'll stand with, and quickly, for her choice may mean the difference between survival and all-out catastrophe.