As summer settles over Airlie Falls, Texas, baker Rosie Hart is gearing up for the upcoming Fourth of July celebrations. Orders are coming in fast, but when someone calls in an order for a mud cake, Rosie feels uneasy. After a series of confusing phone calls, she comes to the chilling conclusion that the term mud cake is in fact code for a hit--someone is ordering a murder! As the dough for her Apple Custard Brioche Bread rises, so does Rosie's anxiety. This isn't like any of the cases she's solved before. This time she has to save someone, but first she has to discover exactly who she's supposed to be saving--and, more importantly, who wants that person dead. With her commitment to the town's week-long festivities, trying to control her nonagenarian friends who've just discovered the home-shopping network, determining if a long-lost child has indeed resurfaced, and not to mention an Elvis impersonator on every corner, Rosie's wondering if she can really unmask the person with murderous intent before they take matters into their own hands.