Some Like it Lethal (Blackbird Sisters Mysteries, No. 3)

When the husband of a wealthy dog food heiress is found bludgeoned to death at an exclusive hunt club, Nora Blackbird is as surprised as anyone. Worse still, the evidence points toward a devious blackmail scheme-with Nora's sister, Emma, as the main suspect. Investigating with the help of friend and foe alike, Nora uncovers the secrets of some of Philadelphia's high-and-mightiest-and attracts the unwanted attentions of the real killer...