Iversen's father, who works as a lawyer and grapples with alcoholism, creating a tense family environment and facing legal issues over time.

Iversen's mother, who copes with the challenges of family secrecy and financial strain while maintaining a turbulent relationship with her husband.

Iversen's younger sister, known for her rebellious nature and strong-willed actions within the family.

Another of Iversen's sisters, an environmental activist and horseback riding enthusiast who carries her passion for activism into adulthood.

The youngest sibling in the Iversen family, who endures recurring health problems that cause concern due to the proximity to Rocky Flats.

Iversen's college boyfriend, who shares her love for adventure and holds strong anti-war and anti-nuclear views.

A neighbor and later a colleague of Iversen at Rocky Flats, whose professional experiences reflect the plant's hazardous environment.

The Jefferson County Board of Health director known for his studies on nuclear contamination and the health impacts of Rocky Flats.

A local activist opposing Rocky Flats' operations, known for her participation in demonstrations and notable interactions with public figures.

A nun active in social justice causes, especially at Rocky Flats, who participates in symbolic protest actions at the plant.

One of the few female security guards at Rocky Flats, who witnesses the tension between management and activists during protests.

An FBI agent leading the significant raid on Rocky Flats, instrumental in uncovering environmental misconduct at the facility.

A whistleblower at Rocky Flats who provides crucial information to the FBI despite facing significant personal and professional backlash.

The foreman of the grand jury trial following the FBI raid on Rocky Flats, astonished by the trial's findings and implications.

A Philadelphia attorney representing landowners in a lawsuit against Rocky Flats, dedicated to the case throughout his career.