Adrianne's son, a talented swimmer and high school honor-roll student whose life changes drastically, leading to reflections on his character and circumstances.

Adrianne's husband and the father of Noah and Katie, an accountant dealing with significant personal and familial upheaval while narrating part of the story.

The young daughter of Adrianne and Lucas, noted for her intelligence and storytelling ability, who grapples with family disruptions during formative years.

A professional and empathetic psychologist at Marsh who provides support and insight into the characters' experiences throughout the story.