Fascinated by a young woman's performance of "The Lost Child" in Guanajuato's central plaza, painfully shy expatriate Callie Quinn asks the woman for a trumpet lesson -- and ends up confronting her longing to know her own lost child. When Callie became pregnant in 1960s rural Missouri over thirty years ago, her outraged father, with her mother's acquiescence, insisted that no one know--and Callie complied. She went away, and she gave...