The Condition tells the story of the McKotches, a proper New England family that comes apart during one fateful summer. The year is 1976, and the family has embarked on their annual vacation to Cape Cod. One day, Frank is struck by his thirteen-year-old daughter, Gwen, standing a full head shorter than her younger cousin. At that moment he knows something is terribly wrong with his only daughter.

Twenty years after Gwen's diagnosis with Turner's Syndrome—a genetic condition that traps her forever in the body of a child—all five family members are still dealing with the fallout. Frank and Paulette are acrimoniously divorced. Billy is dutiful but distant. His brother, Scott, awakens from a pot-addled adolescence to a soul-killing job and a regrettable marriage. And Gwen is silent and emotionally aloof, until she falls in love for the first time. And suddenly, once again, the family's world is tilted on its axis.

Compassionate yet unflinchingly honest, witty and almost painfully astute, The Condition explores the power of family mythologies.