Dead, White and Blue by Carolyn Hart
The South Carolina island of Broward’s Rock is the location of a mystery bookstore called Death on Demand. The proprietor, Annie Darling, takes a break from selling books to attend the local country club’s 4th of July dance. A Hollywood home wrecker, Shell Hurst, also attends and makes a scene before walking away into the night. No one seems to care, not even her husband. Only her stepdaughter feels that something is wrong and asks Annie and her husband, Max, to look into the matter. Then a waiter from the club vanishes and is found drowned, and Annie and Max know that more is heating up than the weather. It doesn't matter if you haven't read previous Death on Demand books, but if you prefer to go back and relish the entire series, begin with Death on Demand. Carolyn Hart, an Oklahoma author, must have a sense of humor to name a character Shell Hurst in a 4th of July story.