Katrina is an Arkansan mother traveling west with the Fancher-Baker wagon train. She makes the grueling journey primarily to find a dry climate to treat her eldest daughter's tuberculosis. Initially feeling out of place on the rugged trail, she relies heavily on the routines of her marriage. When her husband falls gravely ill and the wagon train comes under threat, she is forced to discover a deep reserve of inner strength and maternal ferocity.

Lucy is a devout Mormon settler living in Utah Territory. Her entire worldview is shaped by her religious faith and her trust in local church leadership. She has built a home in the desert and remains fiercely protective of her family. When sudden tragedy strikes her household, she is heavily influenced by the rhetoric of local religious authorities, who channel the community's private grief into a collective rage against outsiders.

Kahpeputz is a young Bannock woman who was kidnapped as a child, sold into enslavement in Brigham Young's household, and later given as a fourth wife to the Paiute leader Chief Kanosh. Stripped of her original identity and renamed "Sally" by her captors, she survives by feigning ignorance and keeping her keen intelligence hidden. She is highly observant, quietly gathering information while being consistently underestimated by those in power around her.

A six-year-old girl traveling westward with her family on the Fancher-Baker wagon train. Enduring the chaotic and often terrifying realities of the frontier, she experiences profound, identity-shattering events that fundamentally alter her memory and sense of self. Her journey is heavily defined by the psychological burden of surviving immense terror at a young age.

Vick is a Mormon settler deeply devoted to his wife, Lucy, and his faith. Following strict orders from church and militia leaders, he is conscripted to join the local militia during a period of martial law. The harsh realities of his military service force him into a position where obedience to authority severely compromises his conscience, turning him into an emotionally withdrawn and haunted man.

The son of Chief Kanosh. Unlike many of the more militant men surrounding him, Awan possesses a strong independent mind and a compassionate nature. He questions the dominant narratives pushed by both the Mormon settlers and his own father, quickly deducing that toxic locoweed, rather than deliberate poisoning, is responsible for the local cattle deaths.

A prominent religious leader in the Latter-day Saints church. He functions as a powerful ideologue, using his authority to shape the perceptions and passions of the Mormon settlers. He skillfully manipulates the community's historical trauma, framing passing emigrants as dangerous enemies and providing the theological justification for preemptive conflict.

A stake president and militia major operating in Cedar City. Sitting at the powerful intersection of church and militia, he is an authoritative figure who translates extreme ideology into direct orders. He uses his dual standing to override dissenters and coerce participation among his men by threatening them with divine and social punishment.

An on-the-ground commander for the Mormon militia. He acts as a duplicitous negotiator, presenting a veneer of civility and Christian assurance to the passing wagon trains. He uses false promises of safe passage to orchestrate his opponents' vulnerability, fully committing to the violent directives of his superiors.

Peter Huff's brother and a member of the Fancher-Baker wagon train. Characterized by a volatile temper and a fierce distrust of the Mormon settlers, he constantly warns his family about the dangers of the territory. His aggressive confrontations with local militias escalate tensions, though his underlying suspicions prove highly accurate.

A local Paiute leader attempting to guide his people through a highly volatile political environment. He accepts Kahpeputz as a wife as a political gesture from Brigham Young, cementing a fragile alliance with the Mormon settlers. He demands strict obedience from his people and frequently meets with territorial leaders to coordinate military responses.

The governor of Utah Territory and president of the Church of Jesus Christ of Latter-Day Saints. Facing an approaching U.S. Army, he issues sweeping declarations of martial law and violent proclamations that set the stage for intense conflict. He shapes the political landscape from afar, using people like Kahpeputz as gifts to secure alliances.

Katrina's husband and a loving father leading his family on the difficult journey from Arkansas to California. He acts as a calming presence for the family, often singing an Irish folk song, "The Parting Glass," to soothe his animals and children. His journey is cut short when he is scratched by an agitated steer and falls suddenly and violently ill.

The primary leader of the Fancher-Baker wagon train. He attempts to manage the growing tensions with local settlers diplomatically and maintain order among his diverse, exhausted party. When the train is attacked, he commands the defensive trench digging and ultimately tries to negotiate their survival.

Chief Kanosh's first wife and Awan's mother. Living under strict patriarchal rules, she initially treats Kahpeputz with the same distance as the other wives. Over time, she recognizes Kahpeputz's intelligence and shares a quiet solidarity with her, using her position as first wife to subtly manipulate situations to protect those she cares about.

Lucy and Vick Robison's fourteen-year-old son. After performing a chore near Corn Creek, he contracts a sudden, severe infection. His mysterious illness becomes a flashpoint for the community, with local leaders using his suffering to incite fear and anger against the passing wagon train.

Katrina and Peter's seventeen-year-old daughter. She suffers from tuberculosis, which is the primary reason the family has undertaken the arduous four-month journey to California, hoping the dry climate will cure her.

Katrina and Peter's capable son. When tragedy strikes the family on the trail, he is forced to take on adult responsibilities, including standing on the firing line to defend the wagon train during the prolonged siege.

Katrina and Peter's nine-year-old son. He acts much like a typical young boy on the trail, alternating between annoying his sisters and helping his mother dig defensive trenches when the camp comes under fire.

The infant daughter of Uri and Louisa, and Katrina's niece. Traveling with the extended Huff family, she suffers a terrible injury during the chaotic events at Mountain Meadows, which deeply affects her development.

Uri's wife and Katrina's sister-in-law. She travels with the extended family on the Fancher-Baker wagon train, sharing the heavy burdens of childcare and survival on the dangerous route to California.