The fourth Great Peach book finds the family back in Duluth, Minnesota for a summer filled with mystery, competition, pie, and . . . the World's Largest Rubber Duck. School's out soon, and the Peaches are looking forward to some quiet, especially now that the family's B&B (aka the "Peach Pit") is finally running smoothly. But quiet and normal aren't really the Peach way. When a massive Festival of Ships sails into their town, of course...