Mud season takes on a whole new meaning in the coastal town of Busman's Harbor, Maine, when local business owners sling dirt at one another in a heated feud over a proposed pedestrian mall. Vandalism is one thing, but murder means Julia Snowden of the Snowden Family Clambake steps in to clean up the case . . .

When Julia spots police cars in front of Lupine Design, she races over. Her sister Livvie works there as a potter. Livvie is unharmed but surrounded by smashed up pottery. The police find the owner Zoey Butterfield digging clay by a nearby bay, but she has no idea who would target her store. Zoey is a vocal advocate for turning four blocks of Main Street into a pedestrian mall on summer weekends. Other shop owners, including her next-door neighbor, are vehemently opposed. Could a small-town fight provoke such destruction? When a murder follows the break-in, it's up to Julia to dig through the secrets and lies to uncover the truth . . .