"THE ADULTS." By Alison Espach. Simon and Schuster. $25.
Alison Espach's debut, "The Adults," is the story of a dysfunctional family of three, narrated by the observant only child, Emily Vidal.
Espach, who earned her master's degree at Washington University, shows Emily as a smart and sassy narrator as she watches her parents' marriage disintegrate, beginning with a detailed depiction of her father's 50th birthday party.