A man named Gil walks from New York to Arizona to recover from a failed love. After he arrives, new neighbors move into the glass-walled house next door, and his life begins to mesh with theirs. In this warmly textured, dryly funny, and philosophical account of Gil's unexpected devotion to the family, Lydia Millet explores the uncanny territory where the self ends and community begins what one person can do in a world beset by emergencies. This book is both sharp-edged and tender, an emotionally moving, intellectually resonant novel that asks, "In the shadow of existential threat, where does hope live?"