Killers of the Flower Moon

The Old Farmer's Almanac, which first began publishing the names for the full moons in the 1930s, recorded the name given by American tribes to the full moon in May as the "Flower Moon" because of the flowers blooming across North America, signaling abundance and the coming of Spring after a cold, hard winter.[9]

The book investigates a series of murders of wealthy Osage people that took place in Osage County, Oklahoma, in the early 1920s—after big oil deposits were discovered beneath their land.[10][11] After the Osage are awarded headrights in court to the profits made from oil deposits found on their land, the Osage people prepare to receive the wealth to which they are legally entitled from sales of their oil deposits.

The Osage are viewed as the "middle man" and a complex plot is hatched to eliminate the Osage inheritors on a one-by-one basis by any means possible. Officially, the count of the wealthy Osage victims reaches at least 20, but Grann suspects that hundreds more may have been killed because of their ties to oil.[12] The book details the newly formed FBI's investigation of the murders, as well as the eventual trial and conviction of cattleman William King Hale as the mastermind behind the plot.

The review aggregator website Book Marks indicated that overall Killers of the Flower Moon received rave reviews from literary critics.[13]

Writing for The New York Times, Dave Eggers called the book "riveting"[14] and wrote, "in these last pages, Grann takes what was already a fascinating and disciplined recording of a forgotten chapter in American history, and with the help of contemporary Osage tribe members, he illuminates a sickening conspiracy that goes far deeper than those four years of horror. It will sear your soul."[14]

Sean Woods of Rolling Stone praised Grann's book, noting, "In his masterful new book...Grann chronicles a tale of murder, betrayal, heroism and a nation's struggle to leave its frontier culture behind and enter the modern world... Filled with almost mythic characters from our past – stoic Texas Rangers, corrupt robber barons, private detectives, and murderous desperadoes like the Al Spencer gang – Grann's story amounts to a secret history of the American frontier."[15]

A reviewer of Publishers Weekly stated, "New Yorker staff writer Grann (The Lost City of Z) burnishes his reputation as a brilliant storyteller in this gripping true-crime narrative, which revisits a baffling and frightening—and relatively unknown—spree of murders occurring mostly in Oklahoma during the 1920s."[16]

David Aaronovitch in The Times wrote, "There is a kick-in-the guts half-twist at the end of the book that gives the work its moral heft and reminds the American people of the great cost of their nationhood. It's a twist that owes everything to Grann's diligence and intelligence as a journalist. It could not have been discovered without what he calls his 'research odyssey.'"[17]

The book was adapted into a film directed by Martin Scorsese and starring Leonardo DiCaprio, Robert De Niro, Lily Gladstone, Brendan Fraser, John Lithgow and Jesse Plemons on a budget of over $200 million.[18][19][20][21] It was released theatrically by Paramount Pictures in October 2023. The film will also stream at an unspecified date on Apple TV+.[7][22]

Though the role of Tom White, the lead FBI agent, was written for DiCaprio, DiCaprio pushed to have his role changed to the nephew of the film's primary antagonist, played by De Niro.[23] As a result, Jesse Plemons was cast as Tom White to replace DiCaprio, while DiCaprio was cast as Ernest Burkhart.[23]

• The FBI Story
• Mean Spirit

• Official website
• Killers of the Flower Moon: The Osage Murders and the Birth of the FBI on YouTube
• DiCaprio and Abrams Team Up in Killers of the Flower Moon - Collider on YouTube
• David Grann at IMDb