Killers of the Flower Moon: Complete Guide to the Film, True Story, and Where to Watch

Martin Scorsese’s 2023 crime drama Killers of the Flower Moon brought the harrowing true story of the Osage murders to a global audience. Based on David Grann’s bestselling nonfiction book, the film chronicles the systematic killings of wealthy Osage people in 1920s Oklahoma and the early FBI investigation that followed. With a star‑studded cast including Leonardo DiCaprio, Robert De Niro, and Lily Gladstone, the movie earned widespread critical praise, a string of major award nominations, and intense discussion about how it portrayed Indigenous tragedy and betrayal.

The film premiered at the Cannes Film Festival in May 2023, received a wide theatrical release in October 2023, and became available for streaming on Apple TV+ in December 2023. Its ambitious three‑and‑a‑half‑hour runtime, intimate character focus, and unflinching depiction of greed and violence made it one of the most talked‑about releases of the year.

This guide covers everything you need to know: the true story behind the movie, where to watch it, the cast and director, the awards and critical reception, and answers to the most common questions about the film.

Is Killers of the Flower Moon Based on a True Story?

Yes. The film is rooted in the real‑life “Reign of Terror” that took place on Osage land in Oklahoma during the 1920s. After oil was discovered beneath their reservation, members of the Osage Nation became some of the wealthiest people per capita in America – and were systematically murdered by white conspirators who wanted their oil rights.

• Scorsese’s longest film (3h 26m) is a slow‑burn historical epic.
• Lily Gladstone’s performance as Mollie Burkhart received universal critical acclaim.
• The film reframes the narrative from the FBI’s perspective to the Osage community’s.
• The Osage murders were a key early case for the FBI under J. Edgar Hoover.
• The film received 10 Academy Award nominations – the most nominated film without a win since 1978.
• Rotten Tomatoes reports a 93% positive critic score with an average rating of 8.5/10.
• The budget was approximately $200 million, making it one of the most expensive independent‑financed films ever.

What Were the Osage Murders?

Between 1921 and 1926, dozens of Osage men and women were killed under suspicious circumstances – by poisoning, shooting, or bombing. The murders were orchestrated by white businessmen and family members who sought to inherit the oil headrights of the Osage. The Osage Nation’s own government asked for federal help, which led to the involvement of the Bureau of Investigation (later the FBI) under J. Edgar Hoover. The case became one of the bureau’s first major homicide investigations.

How Did the FBI Investigation Begin?

In 1926, the Bureau of Investigation sent agent Tom White (played by Jesse Plemons in the film) and a team of undercover operatives to Osage County. They uncovered a vast conspiracy centered on William Hale, a powerful rancher who had presented himself as a “friend” to the Osage. Hale and his accomplices, including his nephew Ernest Burkhart, were eventually convicted, though the justice system at the time was deeply flawed and lenient toward white perpetrators.

What Key Details Did the Film Change?

The movie adapts David Grann’s 2017 nonfiction book but shifts emphasis. Rather than building a mystery around who committed the crimes, Scorsese reveals the conspirators early and focuses on the marriage between Ernest Burkhart (DiCaprio) and Mollie Kyle (Gladstone). Some timelines are compressed, and certain characters are merged or omitted for narrative clarity. The exact conversations and personal motivations of real‑life figures beyond court records are dramatized. Historians note that the film is faithful to the broad historical arc but, like any adaptation, takes creative liberties with specific scenes.

Where Can I Watch Killers of the Flower Moon – Streaming and Release Info

Which Streaming Platforms Offer Killers of the Flower Moon?

The film is currently available for streaming exclusively on Apple TV+. It debuted on the platform on December 5, 2023, after a theatrical run. There is no word on when it might appear on other services, though Apple occasionally licenses content to competitors after an exclusive window.

When Was Killers of the Flower Moon Released in Theaters?

The worldwide theatrical release was October 20, 2023. The film had its world premiere at the Cannes Film Festival in May 2023, where it received a nine‑minute standing ovation.

What Is the Runtime and Rating?

Killers of the Flower Moon runs 3 hours and 26 minutes, making it Scorsese’s longest feature. It is rated R for violence and some sexuality.

Who Stars in Killers of the Flower Moon and Who Directed It?

Who Directed Killers of the Flower Moon?

The film was directed by Martin Scorsese, who co‑wrote the screenplay with Eric Roth. Scorsese has called the project a deeply personal one, and he described shifting the narrative focus from the FBI to the Osage community after conversations with Osage leaders.

What Is the Cast List?

• Leonardo DiCaprio as Ernest Burkhart – a real‑life World War I veteran who married Mollie and participated in the conspiracy.
• Robert De Niro as William Hale – the wealthy cattleman who orchestrated the murders.
• Lily Gladstone as Mollie Burkhart – an Osage woman who inherited oil wealth and became a target.
• Jesse Plemons as Tom White – the FBI agent who led the investigation.
• John Lithgow, Brendan Fraser, Tantoo Cardinal, Cara Jade Myers, JaNae Collins, and Jillian Dion in supporting roles.

What Are the Main Characters Based On?

All major characters (Burkhart, Hale, Mollie, Tom White) are real people. Their on‑screen portrayals draw from court records, contemporaneous accounts, and the historical research in David Grann’s book. The film’s depiction of the relationship between Ernest and Mollie is dramatized, but the basic facts of their marriage and his eventual betrayal are documented.

What Awards and Recognition Has Killers of the Flower Moon Received?

How Did the Film Perform at the Oscars?

The film earned 10 Academy Award nominations, including Best Picture, Best Director, Best Actress (Gladstone), Best Supporting Actor (De Niro), Best Adapted Screenplay, and Best Cinematography. Despite the high number of nominations, it did not win any Oscars – a notable outcome that sparked discussion about possible biases in the voting body.

What Is the Rotten Tomatoes Critical Consensus?

Rotten Tomatoes reports a 93% approval rating from critics with an average score of 8.5/10. The critics’ consensus states: “Enormous in runtime, theme, and achievement, Killers of the Flower Moon is a sobering appraisal of America’s relationship with Indigenous peoples.”

Which Performances Were Most Praised?

Lily Gladstone’s portrayal of Mollie was universally hailed as a career‑defining turn. Leonardo DiCaprio’s understated depiction of Ernest’s moral cowardice also earned strong reviews. Robert De Niro’s chilling performance as William Hale was described as one of his best in years. For those interested in other acclaimed actors, you can explore Taron Egerton movies and TV shows at Taron Egerton movies and TV shows.

Timeline: From the Osage Murders to the Film’s Release

1. 1921–1926 – Osage Reign of Terror: dozens of wealthy Osage murdered for oil rights.
2. 1926 – FBI (Bureau of Investigation) takes over investigation under J. Edgar Hoover.
3. 1929 – Convictions of William Hale and others; Hale sentenced to life (later paroled in 1947).
4. 2017 – David Grann publishes Killers of the Flower Moon: The Osage Murders and the Birth of the FBI.
5. 2018 – Martin Scorsese acquires film rights; development begins.
6. 2021–2022 – Principal photography in Oklahoma.
7. May 2023 – World premiere at Cannes Film Festival.
8. October 2023 – Theatrical release worldwide.
9. January 2024 – Streaming debut on Apple TV+.
10. March 2024 – Academy Awards – 10 nominations, 0 wins (most nominated film without a win since 1978).

What Parts of the Film Are Historically Accurate and What Is Dramatized?

Why Killers of the Flower Moon Matters as a Cultural and Historical Document

Killers of the Flower Moon represents a major Hollywood production focusing on a long‑marginalized chapter of American history. The film emphasizes the Osage perspective and the systemic corruption that exploited the tribe’s oil wealth. Scorsese’s decision to center on the Burkhart marriage rather than just the FBI investigation was widely discussed. The film’s runtime and pacing sparked debate, though many critics praised its ambition and performances, particularly Lily Gladstone’s. The Academy’s decision to give the film 10 nominations but no wins was notable and sparked discussion about bias. The film also brought renewed attention to the Osage Nation’s current efforts for sovereignty and recognition.

What Critics and Historians Say About Killers of the Flower Moon

“Enormous in runtime, theme, and achievement, Killers of the Flower Moon is a sobering appraisal of America’s relationship with Indigenous peoples.”

Rotten Tomatoes critics consensus

“It recounts the true story of how a white businessman and self-proclaimed ‘true friend’ of the Osage Nation orchestrated the brutal murders of dozens of Osage people.”

Time magazine (Oct 20, 2023)

“Members of the Osage tribe in the United States are murdered under mysterious circumstances in the 1920s, sparking a major FBI investigation involving J. Edgar Hoover.”

IMDb plot summary

In Summary: A Landmark Film

Killers of the Flower Moon is a dense, uncompromising epic that forces viewers to confront a brutal period of American history. It is essential viewing for those interested in true crime, Indigenous history, and masterful filmmaking. For a deeper dive into the real events, read David Grann’s book and explore The True Story Behind the Osage Murders.

Frequently Asked Questions About Killers of the Flower Moon