Bury the Hatchet in Dead Mule Swamp is book four of the Anastasia Raven mysteries. Here's the blurb:
Anastasia Raven opens a box containing a bloody hatchet, apparently sent as some sort of warning to her friend Cora and Cora’s ex-husband. When a hacked-up body is discovered in the Petite Sauble River at the small village of Jalmari, everyone is stunned at the victim’s identity. Continued puzzling discoveries just don’t add up. Ana discovers herself agreeing to participate in a zany conspiracy with a tall and handsome man.
The ebook is available for purchase now, only $2.99- less than a good cup of coffee!
Barnes and Noble (not listed yet, should be there soon)