At first, many viewers dismissed Under the Banner of Heaven as just another slow-burn crime drama on an ever-growing list of true-crime adaptations. Then the real story unfolded — and everything shifted from procedural familiarity to something far more disturbing and profound. Based on a harrowing true case from 1984, this seven-episode FX on Hulu miniseries pulls audiences into a double murder that is as heartbreaking as it is shocking. A young mother. Her infant daughter. A seemingly peaceful suburban community in Utah hiding secrets that no one wants to confront.

As the investigation deepens, the series transforms from a straightforward whodunit into a haunting exploration of faith, power, patriarchy, and the dark undercurrents of religious fundamentalism. Andrew Garfield delivers a performance of quiet intensity that lingers long after the final credits roll, earning widespread acclaim and an Emmy nomination. The tension builds slowly, methodically, until it grips you completely and refuses to let go. How can one brutal crime expose something so unsettling at the foundation of an entire belief system? This is the miniseries that many almost overlooked — and now cannot stop discussing.

The True Crime That Inspired It All

In July 1984, in American Fork, Utah, 24-year-old Brenda Wright Lafferty and her 15-month-old daughter Erica were brutally murdered in their home. Brenda, an aspiring journalist with a vibrant personality, had married into the prominent Lafferty family — often called the “Kennedys of Utah” within their Latter-day Saint (LDS) community. The killers were two of her brothers-in-law, Ron and Dan Lafferty, who had spiraled into extreme fundamentalist beliefs. They claimed divine revelations instructed them to carry out the killings as an act of “blood atonement.”

The murders shocked the tight-knit Mormon community, where doors were often left unlocked and trust ran deep. Ron and Dan had grown disillusioned with mainstream LDS teachings, embracing polygamy, distrust of government, and radical interpretations of scripture that justified violence. Their actions stemmed from a toxic mix of personal grievances, family dysfunction, and a dangerous interpretation of faith that viewed Brenda as a threat — partly because she encouraged one of the brothers’ wives to leave an abusive situation and opposed plans for plural marriage.

The story gained national attention at the time, but it was Jon Krakauer’s 2003 nonfiction bestseller Under the Banner of Heaven: A Story of Violent Faith that wove the murders into a larger examination of the LDS Church’s origins and the potential for extremism within any rigid religious structure. The book juxtaposes the 1984 case with the early history of the Church of Jesus Christ of Latter-day Saints, founded by Joseph Smith in the 1830s. Creator Dustin Lance Black (an Oscar winner for Milk and himself raised Mormon) adapted the material into a thoughtful, layered miniseries that premiered on FX on Hulu in April 2022.

A Detective’s Crisis of Faith

At the center of the series is Detective Jeb Pyre, portrayed with remarkable subtlety and emotional depth by Andrew Garfield. Jeb is a devout Mormon, a loving husband and father living in the fictional East Rockwell, Utah. He represents the mainstream, faithful everyman within the LDS community — someone who has never seriously questioned his beliefs or the institutions that shape his life. When he and his partner, Detective Bill Taba (played by the excellent Gil Birmingham, a Native American character who brings an outsider’s perspective), are called to the crime scene, Jeb expects a solvable case in a community where such violence feels impossible.

What follows is a slow unraveling. As Jeb interviews members of the sprawling Lafferty family — including Brenda’s husband Allen (Billy Howle), the charismatic but troubled Ron (Sam Worthington), the intense Dan (Wyatt Russell), and others — he begins to see cracks in the façade of piety. Flashbacks reveal the Lafferty household’s history of patriarchal control, abuse, and growing radicalization under their domineering father Ammon (Christopher Heyerdahl). Brenda, brought to life with warmth and quiet strength by Daisy Edgar-Jones, emerges as a tragic figure: an independent woman who dared to challenge the status quo and paid the ultimate price.

Jeb’s faith is tested at every turn. Interrogations force him to confront uncomfortable truths about revelation, obedience, and the dangers of unchecked religious authority. His non-Mormon partner Bill Taba serves as a grounding voice, gently pushing Jeb to ask the questions he has been taught to avoid. The series smartly avoids turning this into a simple “faith vs. doubt” binary; instead, it portrays Jeb’s internal struggle with empathy and nuance, showing how deeply held beliefs can both comfort and imprison.

Weaving History, Flashbacks, and Multiple Timelines

One of the miniseries’ most ambitious elements is its structure. The narrative moves fluidly between three timelines:

The 1984 murder investigation.
Brenda’s life leading up to the tragedy, highlighting her integration into the Lafferty family and the growing tensions.
Historical reenactments of key moments in LDS history, from Joseph Smith’s visions to the church’s early struggles and doctrinal developments.

These segments are not mere exposition. They illustrate how interpretations of scripture and “revelations” can be twisted to justify control, violence, or isolation from society. The show examines themes of patriarchy, the treatment of women, the tension between mainstream religion and fundamentalist offshoots, and the human cost of dogmatic certainty. Creator Dustin Lance Black brings personal insight to these portrayals, balancing respect for sincere faith with a clear-eyed critique of its potential for harm.

Supporting performances elevate every layer. Wyatt Russell is chilling as Dan Lafferty, a man whose charisma masks dangerous convictions. Sam Worthington brings complexity to Ron. The entire Lafferty ensemble — including Rory Culkin, Seth Numrich, and others — feels lived-in and authentic. Even smaller roles, such as Jeb’s family members, add texture to the portrait of a community in denial.

The Slow Burn That Pays Off

Early episodes may feel deliberate and talk-heavy to some viewers. The series prioritizes character, conversation, and thematic depth over flashy action or constant plot twists. Yet this measured pace is intentional. It mirrors the way disturbing truths often emerge — not in explosive moments, but through quiet realizations and accumulated evidence. Once the pieces begin to connect, the tension becomes nearly unbearable.

The violence, when depicted, is handled with restraint. The focus remains on the emotional and psychological aftermath rather than gratuitous gore. This approach makes the story even more unsettling, forcing audiences to sit with the horror and its implications instead of being numbed by spectacle.

Critics and audiences praised the miniseries for its thoughtful introspection. It holds a strong Certified Fresh rating, with particular acclaim for Garfield’s internalized performance and the ensemble work. Many called it one of the most compelling explorations of faith and extremism in recent television. Garfield himself described the role as a chance to play a deeply internal character, far from the more expressive parts he had taken in recent years.

Why It Resonates So Deeply

Under the Banner of Heaven succeeds because it refuses easy answers. It does not paint all Mormons with the same brush or reduce the story to anti-religion propaganda. Instead, it asks difficult questions: What happens when personal revelation overrides community norms or basic humanity? How do institutions respond when their history or doctrines are used to justify harm? And how does an individual reconcile lifelong faith with emerging evidence that challenges its foundations?

In a broader sense, the series speaks to universal concerns about radicalization, toxic masculinity wrapped in religious language, and the silence that can enable abuse. It arrives at a cultural moment when conversations about faith, power, and accountability feel especially urgent across many traditions.

For those who initially passed it over thinking it was “just another crime show,” the revelation comes quickly: this is television that lingers. It invites reflection on belief, doubt, and the thin line between devotion and delusion. Andrew Garfield’s Jeb Pyre becomes a surrogate for the audience — a good man trying to do right while watching his worldview fracture.

The miniseries does not preach or proselytize. It simply holds up a mirror to a specific tragedy and the larger forces surrounding it, allowing viewers to draw their own conclusions. In doing so, it achieves something rare: a true-crime drama that is as intellectually stimulating as it is emotionally devastating.

Years after its release, Under the Banner of Heaven remains a standout limited series — one that rewards patience and leaves a lasting impact. It reminds us that the most disturbing stories are often not about monsters lurking in shadows, but about ordinary people who convince themselves that heaven itself demands terrible acts. In a quiet Utah suburb, under the banner of faith, darkness found its justification. And once you see it, you cannot look away.