Kathryn’s husband and a pilot, whose mysterious life comes to light after his death. His work and personal choices leave a lasting impact on his family.

An employee of the pilot’s union who supports Kathryn after Jack's death. He becomes a significant presence in her life as she processes her grief.

Kathryn and Jack’s teenage daughter, who shares her father’s unique genetic trait. She confronts her grief directly and is known for her candidness.

Kathryn’s paternal grandmother who raised her in Ely. Julia is a pragmatic and supportive figure for both Kathryn and Mattie during their grieving process.

Jack’s other wife, who embodies a life unknown to Kathryn. Her presence reveals different facets of Jack’s secret past.