“Voices are a soul’s signature,” says psychologist Dan Shapiro, who in his daily practice hears plenty of them. For all his expertise, he admits he’s still terrified that “someone will keep something from me, and when they tell me the truth, I’ll be useless.” Treating other physicians has become one of Shapiro’s specialties. When the obstetrician Amelia Sorvino seeks his help—distraught that her own medical error could have injured a patient’s baby—Shapiro finds his talents as counselor and healer pushed to their limits. Session by session, he works to discover the sources of Amelia’s anguish—for his own sake as much as hers: he’s familiar with the burden of a doctor’s guilt, and he has seen how loss and trauma, if unchecked, can echo from generation to generation in a family.