Utah is the book’s central geographic and cultural setting: a place where the Church of Jesus Christ of Latter-day Saints shapes public life, family expectations, and political identity, yet where competing claims to religious authority repeatedly produce conflict. Provo and the surrounding Utah County anchor the Lafferty family’s history, while the state’s territorial past supplies an earlier example of church and civil power contending over which law should prevail.

The Mormon heartland

The book distinguishes Utah’s religious center from its most familiar urban symbol. Salt Lake City, Utah, may be widely regarded as Mormonism’s geographic heart, but the narrative notes that half its population is Gentile and that some Mormons consider it corrupted by outsiders. It instead locates the community’s heartland in Provo, Utah, and neighboring Utah County, where the population is described as nearly 90 percent Latter-day Saint. Highland, Utah, American Fork, Utah, Orem, Payson, and Salem appear as small towns within this concentrated religious landscape.

That cultural presence is visible in ordinary routines as well as formal institutions. The book describes Sunday closures extending across local businesses and public swimming pools, even during the hottest summer days. In Provo, Brigham Young University and the LDS Missionary Training Center make the city a major center of religious education and missionary preparation. The university’s tightly regulated appearance and conduct—its carefully maintained grounds, grooming standards, and restrictions on alcohol, coffee, smoking, and profanity—serve as a concentrated illustration of the discipline associated with the community.

The narrative also connects local religious norms with family size and politics. The Church teaches that couples have a sacred responsibility to have as many children as they can support, while opposing abortion and discouraging contraception. The book links those teachings to Utah County’s exceptionally high birth rate, which it describes as the highest in the United States and higher than Bangladesh’s. It also characterizes the county as the most Republican in a state it calls the nation’s most Republican. In this account, Utah County’s political conservatism and religious concentration reinforce one another, and the region becomes a stronghold not only of mainstream Mormonism but also of Mormon Fundamentalism.

Provo and the Lafferty family

Provo sits between Utah Lake and Provo Peak and serves as the seat of Utah County. It is also the home ground of the Lafferty family. Watson Lafferty, the family patriarch, ran a successful chiropractic practice from his home in downtown Provo’s historic quarter. He and Claudine raised six sons and two daughters, emphasizing hard work and devotion to the Church. Before the murders brought the family name to statewide attention, the Laffertys were known locally for their industry and probity.

The family’s geography connects Provo with nearby American Fork, Utah. In the summer of 1984, Allen Lafferty lived there with his wife, Brenda Lafferty, and their fifteen-month-old daughter, Erica Lafferty. Allen left before dawn on July 24 to work at a construction site east of Ogden. After he returned home and found Brenda dead, he sought help from a neighbor and contacted his mother. Police initially treated Allen as the likely suspect, but he persuaded them to investigate his oldest brother, Ron Lafferty, who had recently returned to Utah County after traveling through the West with Dan Lafferty.

The killings quickly became a statewide news story. Their apparent ritual character heightened public alarm, and the search for the brothers turned the family’s private violence into a public crisis. Later accounts of the drive west from Utah also preserve a consequential disagreement: Dan said he told fellow travelers that he had killed Brenda and Erica, while Chip Carnes testified that Ron had described his own role in the attacks. Dan disputed much of Carnes’s account but did not dispute its essential closing exchange about the brothers’ respective involvement. The narrative does not treat the disputed question of who wielded the knife as changing their shared responsibility. Utah is therefore not merely where the violence began; it is the home community whose institutions, family ties, and religious disputes form its setting.

Territorial power and competing law

The book reaches further back to Utah’s territorial period to show how religious authority could become political and judicial authority. Under Brigham Young, the Saints in Deseret argued that divine law took precedence over the laws of the United States, particularly where plural marriage was concerned. The conflict was not simply a clash of beliefs: it involved institutions designed to determine which legal order would govern people’s lives.

Because Utah remained a territory, federal courts were supposed to hold legal power. The Utah Territorial Legislature, dominated by Mormons, expanded local probate courts, which Brigham Young controlled, and thereby displaced federal jurisdiction. Many probate judges were Mormon bishops, and juries were largely composed of Church members who followed instructions from religious leaders. Federal officials described the resulting order as a theocratic dictatorship. The account also reports that harassment drove all but two of the federal officials sent to Utah to leave, amid fears for their safety; it notes that an undocumented number of federal agents were believed to have been killed.

This history gives the book’s later Utah settings a wider frame. Arguments about whether religious conviction can override civil law recur in the modern conflicts over plural marriage and state prosecution. The issue is presented as a contest among authorities, rather than as an abstract disagreement alone: church teaching, local institutions, and government enforcement each claim a role in defining lawful conduct.

Education, belief, and dissent

Utah also appears as a place where education can unsettle religious certainty. DeLoy Bateman, who was raised in Colorado City, Arizona, was sent to college in Cedar City, Utah, to train as a teacher. His first geology course introduced a conflict between the scientific account of the earth’s age and the account taught by his religious community. He later described college as the beginning of a long process that eventually led him away from the faith. The episode links a Utah institution of higher learning to the larger tension between controlled religious knowledge and independent inquiry.

The book presents Utah County as a setting where divergent interpretations of Mormon history can lead beyond the mainstream Church. Dan Lafferty’s self-directed study persuaded him that the Church had abandoned plural marriage under pressure from the federal government and had consequently departed from its original course. His rejection of government licensing, taxes, and Social Security numbers likewise shows how religious and scriptural reasoning could extend into opposition to ordinary state requirements. The account places these convictions within the broader emergence of Mormon Fundamentalism, without treating the county’s mainstream religious culture and its fundamentalist movements as interchangeable.

Utah’s significance in the narrative lies in that proximity and friction. Its towns provide the Laffertys’ home ground; its institutions embody an unusually visible religious culture; and its history supplies examples of church authority competing with federal law. At the same time, the state is not depicted as religiously uniform or as a place where belief produces a single outcome. The book’s Utah contains institutional discipline, political solidarity, dissent, contested legal power, and the consequences of treating personal revelation as a claim to authority over others.