Bury the Hatchet in Dead Mule Swamp by Joan Young
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 also agrees to participate in a zany conspiracy with a tall and handsome man.