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Killers of the Flower Moon is a 2023 scripted historical crime drama about the murders of Osage people in 1920s Oklahoma after oil wealth made their mineral-rights royalties a target. It is not a documentary or a conventional FBI procedural. Martin Scorsese’s film is more fundamentally a tragedy about colonial extraction, guardianship abuse, intimate betrayal, and the limited reach of official justice.
The story follows Mollie Kyle, an Osage woman whose family holds valuable oil rights, and Ernest Burkhart, the white man she marries. Their relationship connects her family to Ernest’s uncle, William Hale, a powerful local rancher later identified as a central conspirator. The film uses that family structure to show how murder, marriage, inheritance, and supposedly respectable institutions could operate together.
This guide explains the historical events behind the film, the ending, its relationship to David Grann’s book, the cast and production, the Osage contribution to the project, the music and awards, and the current viewing and physical-media options. Spoilers follow, including for the film’s ending.
What is Killers of the Flower Moon about?
Directed by Martin Scorsese and co-written by Scorsese and Eric Roth, Killers of the Flower Moon adapts David Grann’s nonfiction book Killers of the Flower Moon: The Osage Murders and the Birth of the FBI. Leonardo DiCaprio plays Ernest Burkhart, Lily Gladstone plays Mollie Kyle, Robert De Niro plays William Hale, and Jesse Plemons plays investigator Tom White.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesApple describes the film as a crime drama and western. Its story begins with the oil discoveries beneath Osage land, which produced enormous wealth for Osage citizens through federally recognized mineral interests commonly known as head rights. As outsiders arrived seeking access to that money, Osage people were subjected to fraud, coercive guardianship arrangements, exploitative marriages, and murder. The film then follows the investigation that eventually brought Hale and others to trial.
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That summary is accurate, but it can make the film sound like a standard investigation story. Scorsese’s most important choice is to place the emotional center on Mollie and Ernest rather than on the birth of the FBI. The Bureau of Investigation enters the story, but the film asks the audience to watch the crime from inside a family and a community already being damaged by a system that treated Osage wealth as something outsiders were entitled to control.
At a glance
| Release | 2023 |
|---|---|
| Director | Martin Scorsese |
| Writers | Martin Scorsese and Eric Roth |
| Principal cast | Leonardo DiCaprio, Robert De Niro, Lily Gladstone, and Jesse Plemons |
| Genre | Crime drama and western |
| Rating | R |
| Runtime | 3 hours 26 minutes |
Runtime, rating, genre, and availability are based on Apple’s current film listings and can vary by territory or platform.
The real history behind the film
Why Osage oil wealth was so valuable
Oil was discovered on the Osage reservation in Oklahoma, making Osage citizens extraordinarily wealthy through royalties attached to their mineral rights. Those interests were distributed through federally mandated head rights. The arrangement meant that a person’s connection to the mineral estate could generate significant income, but it also created an obvious target for anyone trying to seize control of Osage money.
The danger was not simply that criminals wanted to steal cash. Outsiders could pursue access through legal-looking relationships and institutions. Marriage could connect a non-Osage man to a family’s wealth. A court-appointed or federally imposed guardian could control how an Osage person spent money. Fraud could redirect property or royalties. Murder could remove the person whose rights were being targeted.
The FBI’s historical account of the Osage murders describes outsiders arriving in Osage County to separate Osage people from their wealth, including through murder. The film dramatizes that process through Mollie’s family and the influence of William Hale, but the underlying problem was structural: wealth existed within a system that denied many Osage citizens full control over their own finances.
The guardianship system
One of the film’s most disturbing historical elements is the guardianship system. Many Osage people were declared legally incompetent by the authorities of the period and assigned white guardians to oversee their money. The system purported to protect wealth, but in practice it gave outsiders substantial control over Osage spending and financial decisions. That made exploitation easier to disguise as administration.
The guardianship issue also explains why the murders cannot be reduced to an isolated family conspiracy. The violence took place alongside discriminatory laws, federal restrictions, local influence, and financial arrangements that made Osage people vulnerable. The film’s domestic story is therefore also a story about institutions.
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The Reign of Terror
Anna Brown’s death in 1921 became one of the key events in the expanding crisis. As more Osage people died in violent or suspicious circumstances, fear spread through the community. The period became known as the Reign of Terror.
The exact number of victims remains uncertain. Historical accounts commonly identify at least 24 Osage people who died under violent or suspicious circumstances, while some estimates reach possibly as many as 150. Those figures should not be presented as a single definitively established total, nor should every death in the wider period automatically be described as part of one proven conspiracy. The uncertainty is itself part of the historical problem: records were incomplete, investigations were limited, and the wider pattern was not fully accounted for.
How the federal investigation began
In 1923, the Osage Tribal Council petitioned the federal government for help. The Bureau of Investigation eventually assigned agents to the case. The agency that later became the FBI was not initially treated as an all-powerful institution arriving to solve a neatly defined crime; the investigation followed years of fear and pressure from the Osage community.
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Tom White led the federal effort dramatized in the film. According to the FBI’s historical account, undercover agents adopted several identities, including an insurance salesman, a cattle buyer, an oil prospector, and an herbal doctor. Their work eventually focused on Hale and his associates. Hale was convicted in January 1929.
That official outcome matters, but it is not a complete resolution. A conviction in a central case did not restore every lost head right, answer every suspicious death, or erase the guardianship and property systems that had enabled exploitation. This is why the film is stronger when read as a critique of limited justice than as a celebration of the FBI.
Who was William Hale?
William Hale, known locally as the King of the Osage Hills, was a rancher and influential figure in Osage County. The historical account identifies him as a central conspirator who used his local power and his relationship with his nephew Ernest Burkhart to pursue control of family head rights.
That relationship gives the film its moral pressure. Hale is not a distant criminal mastermind operating outside respectable society. He is a trusted relative, a successful community figure, and someone able to make violence look like family business or financial necessity. Ernest becomes the link between Hale’s plans and Mollie’s household.
DiCaprio plays Ernest as compromised rather than conventionally heroic. Ernest is not simply an undercover participant who discovers the truth and rejects it. His love for Mollie exists alongside his willingness to participate in a scheme that endangers her. That contradiction is central to the film: personal affection does not automatically overcome racial entitlement, greed, obedience, or self-interest.
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Lily Gladstone’s Mollie is the film’s emotional anchor. Mollie is not merely the person through whom the plot reaches Hale or the FBI. She belongs to a family and a community with its own social world, language, ceremonies, wealth, grief, and political reality. The film’s decision to spend so much time with her and Ernest makes the betrayal feel intimate rather than merely investigative.
Mollie’s vulnerability is also complicated by the fact that wealth does not make her free. Her family’s oil income attracts outsiders, while the guardianship system and medical authority constrain her ability to control what happens around her. The film repeatedly places her between apparent care and concealed exploitation.
Gladstone’s performance works through restraint. Mollie often has to interpret what others are hiding while maintaining composure in situations shaped by unequal power. Her quietness should not be mistaken for passivity; it becomes a record of how much she understands and how little control the surrounding system allows her.
Apple reported that Gladstone became the first Indigenous actress to win a Golden Globe for Best Performance in a Motion Picture—Drama. She was also nominated for Best Actress at the 96th Academy Awards. Those honors recognize a performance that carries much of the film’s grief without turning Mollie into a simple symbol.
What does the ending mean?
In the ending, the film turns attention from the historical crime to the act of telling and retelling it. After spending most of its length inside the Osage tragedy, the film foregrounds performance, narration, media, and public memory. The shift can feel abrupt because it refuses the comforting shape of a conventional crime drama, in which the investigation ends and the audience leaves with a clean account of justice.
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The most useful interpretation is that the ending makes storytelling part of the subject. The murders were transformed into an investigation, the investigation into a book, and the book into a major film. Each form of retelling brings the history to a new audience, but each also risks converting Osage suffering into a consumable story organized around outsiders: detectives, authors, directors, or stars.
That does not mean the film is arguing that retelling the history is inherently wrong. Rather, it asks the audience to notice the power involved in retelling it. Who is centered? Who is made into a witness? Who receives narrative agency? What disappears when a community’s history is arranged as a mystery to be solved?
The ending is especially significant because the production itself changed direction after Scorsese and the filmmakers spoke with Osage leaders. Reporting from Smithsonian’s account of how Osage voices changed the project describes a reconfiguration that placed Osage life, language, and cultural presence more centrally than the book’s FBI-oriented structure. The final form therefore reflects a tension it also examines: a non-Osage filmmaker is attempting to tell a story while acknowledging that the story cannot belong solely to him.
This is an interpretation of the film’s formal choices, not a claim that Scorsese has supplied one official meaning or that every Osage viewer responds to the ending in the same way. Its value lies in making the audience examine its own position as a consumer of historical tragedy.
How the film differs from David Grann’s book
David Grann’s 2017 nonfiction book is titled Killers of the Flower Moon: The Osage Murders and the Birth of the FBI. The Library of Congress identifies it as a No. 1 New York Times bestseller, a National Book Award finalist, and an Edgar Allan Poe Award winner. The Osage Nation’s recommended readings and resources also include it as an introductory work, while noting that the list is not exhaustive and does not constitute an endorsement of every detail in every publication.
The book is substantially an investigation into the murders and the emergence of the FBI’s role. It gathers historical evidence, follows the federal case, and considers the institutional history surrounding the crimes. The film retains the conspiracy and the historical framework, but it reframes the material around the relationship among Mollie, Ernest, Hale, and the Osage community.
That change has important consequences. In the book, the investigative structure helps readers understand how the case was built. In the film, the audience spends more time feeling the pressure of a marriage and family network in which love, dependency, and murder coexist. The film is therefore adapted from Grann’s work, but it does not faithfully reproduce the book’s structure or give equal narrative weight to every part of its investigation.
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For the more investigation-centered account, consider David Grann’s original book. It is the nonfiction source behind the film, but the book and film should be compared as different works rather than treated as interchangeable versions of the same narrative.
How Osage voices shaped the production
The film should not be described as a complete or unmediated representation of Osage history. It remains a Hollywood production directed by a non-Osage filmmaker. But the production did incorporate substantial Osage cultural and language expertise, and that involvement is important to understanding what appears on screen.
Criterion’s official edition credits John Williams as Osage cultural consultant; Vann Bighorse as Osage cultural, music, and language consultant; Janis Carpenter, Christopher Cote, and Braxton Redeagle as Osage-language teachers and translators; and Julie O’Keefe as Osage clothing consultant. Additional Osage community, music, and celebration consultants are also credited. These contributions help explain the film’s attention to language, clothing, ceremonies, music, and community life.
The Osage Nation Congress publicly supported Lily Gladstone and Scott George for their contributions to the film. The Nation states that the resolutions were passed into law in February 2024 and praised the project’s amplification of Native storytelling and its collaboration with the Osage Nation. That institutional support is meaningful, but it should not be turned into a claim that every Osage person or every Osage viewer shares one opinion of the film.
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For readers seeking context beyond a single feature film, the Osage Nation recommended readings and resources are a better starting point than treating the film as a complete history. The Nation’s list includes material on Osage history, language, culture, and the murders, while explicitly cautioning that it is not exhaustive.
The performances and filmmaking
The principal performances create three contrasting forms of power. Gladstone’s Mollie embodies the emotional and communal cost of the crimes. DiCaprio’s Ernest shows how weakness and dependency can become active participation. De Niro’s Hale represents the polished local authority that turns exploitation into a social relationship. Plemons’ Tom White provides the investigative perspective, but the film does not allow that perspective to absorb the entire story.
Scorsese and cinematographer Rodrigo Prieto give the film the scale of an American historical epic while repeatedly returning to domestic interiors, sickrooms, family gatherings, and community spaces. The contrast matters: the violence is not only something that happens in a distant landscape. It enters homes, marriages, financial arrangements, and systems of care.
The film received major recognition at the 96th Academy Awards. Its nominations included Best Picture, Best Director for Scorsese, Best Actress for Gladstone, Film Editing for Thelma Schoonmaker, Cinematography for Rodrigo Prieto, Costume Design for Jacqueline West, Original Score for Robbie Robertson, and Original Song for Scott George and the Osage Singers for Wahzhazhe (A Song for My People), along with other craft nominations. It did not win Best Picture; Oppenheimer won that award.
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The score and Wahzhazhe
Robbie Robertson composed the score, combining original material with traditional and historical recordings. The music does not function merely as period atmosphere. It helps connect the film’s oil boom, dread, communal life, and grief.
The soundtrack includes Wahzhazhe (A Song for My People) by the Osage Tribal Singers, as well as Robertson tracks such as Osage Oil Boom, Reign of Terror, Still Standing, and Salvation Adagio. Apple Music lists the soundtrack as a 21-track release dated October 20, 2023. The song’s Academy Award nomination also placed Osage musical contribution directly within the film’s central creative recognition.
The soundtrack is worth approaching separately from the film. The score’s use of Osage musical presence is not a substitute for historical knowledge, but it is one of the ways the production allows community and cultural identity to remain audible rather than treating the Osage world as background decoration.
Where to watch Killers of the Flower Moon
The official Apple TV listing is the most reliable starting point for checking the film’s current viewing options. It identifies the 2023 R-rated film and its 3-hour-26-minute runtime. Availability, rental or purchase pricing, subscription terms, and regional access can change, so readers should confirm those details at the time of viewing and in their own country.
An official listing does not necessarily mean that the film is included in every subscription tier or available in every territory. Do not assume that a United States listing applies elsewhere. The film’s length also makes it worth checking whether a platform presents the complete 3-hour-26-minute version.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Criterion 4K, Blu-ray, and DVD editions
For viewers who want a permanent copy or the most substantial supplementary material, Criterion’s official page lists a director-approved 4K UHD plus Blu-ray special edition, a Blu-ray edition, and a two-disc DVD edition. The listed 4K set includes a new 4K digital master approved by Scorsese, Dolby Vision HDR, Dolby Atmos, and a documentary featuring Scorsese, members of the cast, David Grann, Osage Nation Principal Chief Geoffrey Standing Bear, and Osage cultural consultants.
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Criterion’s page lists suggested retail prices of $49.95 for the 4K UHD/Blu-ray set, $39.95 for the Blu-ray, and $29.95 for the DVD. It identifies March 24, 2026 as the relevant release or edition date. Prices, stock, region compatibility, and retailer availability can change, so check the current Criterion page or retailer listing before buying. The 4K version is the obvious choice for a Dolby Vision-capable display and Atmos-compatible audio system; the Blu-ray is the more practical physical option for viewers without 4K equipment; and the DVD is aimed at readers who still use standard-definition hardware.
The supplements are particularly relevant here because the edition’s documentary includes Osage voices and cultural consultants rather than presenting the film as a self-contained object. That does not make the film or its extras a complete history, but it gives viewers more material for considering how the production was made.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesWhich format makes sense?
- Streaming: Best for first viewing, but verify current territory, price, and subscription terms.
- Criterion 4K UHD/Blu-ray: Best for viewers with compatible equipment who want the director-approved 4K master and listed bonus material.
- Criterion Blu-ray: A strong physical alternative without a 4K setup.
- Criterion DVD: The basic option for standard DVD equipment.
Is Killers of the Flower Moon a documentary?
No. It is a scripted American crime drama based on a nonfiction book and historical events. The actors portray historical figures, and the film uses constructed scenes, dialogue, performance, editing, music, and point of view to interpret the record. It can introduce viewers to the Osage murders, but it should be approached as a dramatization rather than as a complete documentary archive.
That distinction matters especially because the historical record is broader and more uncertain than the film’s central family narrative. The film focuses on Mollie, Ernest, Hale, and the federal investigation; it cannot represent every victim, every suspicious death, every Osage experience, or the full history of federal policy and guardianship.
What the film gets right—and what viewers should question
- It gets the central relationship between oil wealth and danger into view. Osage mineral-rights royalties attracted outsiders who sought control of Osage money through both formal and criminal means.
- It shows that exploitation could look respectable. Marriage, guardianship, medical care, local influence, and financial management could all become channels of control.
- It avoids making the FBI the entire story. The Bureau’s investigation matters, but it came after Osage pressure and operated within a system that had already enabled abuse.
- It centers a family tragedy. The shift from the book’s investigative emphasis to Mollie and Ernest makes the moral problem personal, though it also means the film is selective.
- It requires historical qualification. At least 24 deaths, and possibly as many as 150, are cited in historical accounts, but the higher number is not an uncontested definitive total and not every death was necessarily part of one proven plot.
- It should be paired with Osage sources. The film incorporates Osage expertise and received public support from the Osage Nation Congress, but no single film can stand in for Osage history, culture, language, or the diversity of Osage opinion.
The most responsible way to watch Killers of the Flower Moon is to hold two ideas together: it is a powerful work of filmmaking that brings a suppressed history to a large audience, and it is still an interpretation made through the choices of a particular director, writers, performers, and production. Its success should lead viewers toward more Osage-centered resources, not end the inquiry.
Frequently Asked Questions
Is Killers of the Flower Moon based on a true story?
Yes. The film is based on the Osage murders in 1920s Oklahoma and on David Grann’s nonfiction book, but it is a scripted dramatization. The historical death toll is uncertain: sources identify at least 24 violent or suspicious deaths, with some estimates reaching possibly as many as 150.
How does the film differ from David Grann’s book?
Grann’s book, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI, is structured substantially as an investigation into the crimes and the emergence of the Bureau of Investigation. Scorsese’s film reframes the material around Mollie Kyle, Ernest Burkhart, William Hale, and the Osage community, giving the family relationship more emotional and moral weight.
What does the ending of the film mean?
The ending foregrounds narration, performance, media, and the act of retelling history. It asks viewers to consider how Osage suffering becomes an investigation, a book, and a film—and whose perspective receives control when that history is presented to the public. This is an interpretation of the film’s formal choices, not a claim that every viewer or every Osage person shares one reading.
How long is Killers of the Flower Moon?
The film runs 3 hours and 26 minutes. Apple lists it as an R-rated 2023 crime drama and western.
Where can I watch Killers of the Flower Moon?
Check the official Apple TV listing for current availability in your territory. Streaming access, rental and purchase prices, subscription terms, and regional availability can change, so confirm the details at the time of viewing.
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Criterion lists a director-approved 4K UHD plus Blu-ray special edition, a Blu-ray edition, and a two-disc DVD edition. The listed 4K release includes Dolby Vision HDR, Dolby Atmos, and a documentary with filmmakers, cast, David Grann, the Osage Nation Principal Chief, and Osage cultural consultants. Verify current price, stock, and release information before purchasing.
The Bottom Line
Bottom line: Killers of the Flower Moon is most valuable when understood as an Osage-centered historical tragedy rather than a triumphant FBI mystery. Its story is about oil wealth, colonial entitlement, guardianship, marriage, murder, and the difficult process of turning lived suffering into public history. Watch the film as a dramatization, then use Osage Nation resources and Grann’s book to continue beyond its point of view.
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