Anonymity is a novel divided into three parts—“Halloween,” “Anonymity,” and “Revenge”—of four chapters each, a total of twelve chapters, each approximately thirty pages long. The four chapters of “Halloween” take place on the afternoon and evening of Halloween of 2005, almost two years after the disappearance of an eleven-year-old child, Grace Mays, in Auburn, Alabama. Warren and Margaret Mays, two years after the disappearance of their daughter, have decided to separate. Warren, who teaches American history at Auburn University, has moved out of the house and spends much of his time compulsively walking the streets of Auburn, haunted by his missing daughter. He’s begun, through a misunderstanding with a colleague, a recovering alcoholic named Red Hall, to attend AA meetings. In “Anonymity,” Warren learns, through the web of relationships in AA, the identity of the man responsible for the death of his daughter. In “Revenge,” Warren struggles with his discovery and eventually confronts the man who killed his daughter and the police detective whose job it has been, for the last two years, to find her.