A tall, slender nurse with blond hair who is stranded in Black Mountain post-EMP and becomes vital in providing medical expertise and support to the community.

The head of campus security at Montreat College, a former marine, who becomes crucial in maintaining peace and assisting John during the town's crisis.

John's mother-in-law, a resilient older woman who supports the family through the challenges that arise after the EMP event.

John's 16-year-old daughter, who navigates personal challenges amidst the broader community struggles resulting from the EMP disaster.

John's 12-year-old daughter, who faces serious health challenges exacerbated by the EMP situation.

The director of public safety in Black Mountain who assumes leadership roles during the crisis, prioritizing the wellbeing of the community.

The town mayor who effectively collaborates with other leaders to manage the town's affairs after the EMP impact.

The town's general practitioner who plays a critical role in health management and advice during the post-EMP health crisis.

The president of Montreat College who works closely with John and Washington to prepare the college community for the challenges following the EMP event.