Skeletons of the Atchafalaya — Kent Conwell

However, instead of three days of rich Cajun food, dancing, and laughing over old times at his family reunion at Whiskey Bend in the middle of the Atchafalaya Swamp, Tony Boudreaux faces trouble. Tony and his family find themselves not only cut off from the rest of the world by Belle, a Category Three hurricane, but also confronted with voodoo wangas, an angry family trying to lynch one of its own and a psychotic killer who has decided to double the Boudreaux and Thibodeaux populations in the family cemetery.

And by the most unique methods.

Which means Tony has to work quickly...before the hurricane strikes and before the murderer kills again.