he baked bean supper is the social highlight of Northcutt Harbor, Maine. This year it will also be the last get-together for certain citizins of the town. First, Regina and Coley Cogswell are killed when their pleasure boat explodes at sea. Then another dear friend of Mrs. Potter's, Harvard Northcutt, dies of rather mysterious causes. Soon it becomes clear that the next victim will be Mrs. Potter herself--unless she can uncover the shocking mission and motives lurking just beneath the surface of this sleepy coastal town.