When the Levine family travels to the scenic coastal village of Chelton for the summer, the worst they expect is to get a little sand in their shoes. But on their first day in town a chance purchase quickly involves them in a fascinating mystery. The Levine kids stumble upon hints of a shipwrecked treasure in the waters off the coast. Suddenly the hunt is on, with results that no one—least of all the Levines—would ever imagine