>>20342084
movie for reference
https://en.wikipedia.org/wiki/Killers_of_the_Flower_Moon_(film)
Plot
Osage Nation elders bury a ceremonial pipe, mourning their descendants' assimilation into White American society. Wandering through their Oklahoma reservation, during the annual "flower moon" phenomenon of fields of blooms,[14] several Osage find oil gushing from the ground. The tribe becomes wealthy, as it retains mineral rights and members share in oil-lease revenues, though law requires white court-appointed legal guardians to manage the money of full and half-blood members, assuming them "incompetent".[b]
In 1919, Ernest Burkhart returns from World War I to live with his brother Byron and uncle William King Hale on Hale's large reservation ranch. Hale, a reserve deputy sheriff and cattle rancher, poses as a friendly benefactor of the Osage, speaking their language and bestowing gifts. Ernest and Byron commit armed robbery against the Osage. Ernest meets Mollie Kyle, an Osage whose family owns oil headrights, via his day job as a cab driver. A romance develops, and the two marry in a ceremony mixing Roman Catholic and Osage traditions. Over time, they raise three children.
Hale secretly orders the contract killings of multiple wealthy Osage. He explains that Ernest will inherit more headrights if more of Mollie's family dies. Mollie is diabetic, and her mother Lizzie is ill. After Mollie's sister Minnie dies of a mysterious illness, Hale orders Byron to kill Mollie's other sister, the rebellious Anna. Lizzie and the Osage council blame the reservation's white residents and urge the tribe to fight back.
A newsreel of the 1921 Tulsa race massacre, in which white people destroyed a black community and killed numerous residents, causes further concern amongst the Osage that they could suffer similarly. Lizzie sees her ancestors welcome her to the afterlife as she dies. Hale orders Ernest to arrange the murder of Henry Roan, Mollie's first husband. However, Ernest botches the assassination and Hale paddles him inside a Masonic Temple as punishment.
Since Hale is the local political boss, and both the local sheriff and judges are in his pocket, no investigations are made. An Osage Nation representative seeking to lobby Congress is murdered in Washington, D.C., while private detective William J. Burns, who was discreetly hired by Mollie, is attacked by Ernest and Byron, who run him off of the reservation.
Hale orders Ernest to murder Mollie's last surviving sister Reta and her husband Bill by having criminal Acie Kirby blow up their house. As the last surviving member of her family, Mollie inherits their headrights. Despite her illness, she travels to Washington with an Osage delegation and asks President Calvin Coolidge for help. Because of this, Hale orders Ernest to poison Mollie's insulin to "slow her down". Mollie's condition worsens, and Ernest exhibits similar symptoms after ingesting the poison himself.
Due to Mollie's lobbying, the Bureau of Investigation (BOI) sends Agent Thomas Bruce White Sr. and assistants to investigate; they quickly discover the truth. Hale tries to cover his tracks by murdering his own hitmen, including Acie, but White arrests Hale and Ernest. While Ernest is being interrogated, two agents are sent to question Mollie and find her near death. They rush her to the hospital where the doctors discover that she has been repeatedly poisoned and quickly notify White and the other agents. Mollie recovers under the care of the staff.
White persuades Ernest to confess and turn state's evidence against his uncle. W. S. Hamilton, Hale's attorney, tries to convince Ernest to claim he was tortured and recant. However, after one of his daughters dies of whooping cough, Ernest testifies against his uncle, wanting to be around for his remaining family. Hale unsuccessfully tries to have his nephew murdered. Mollie meets with Ernest after he testifies, and leaves him after he refuses to admit to poisoning her.
A radio drama years later reveals the aftermath: The Shoun brothers, who gave Ernest the poison for Mollie and were implicated in other "wasting deaths", were never prosecuted due to lack of evidence. Byron served no prison time due to a hung jury.[c]. Hale and Ernest were sentenced to life imprisonments. Both were paroled after years of incarceration, despite Osage protests to the parole board. Mollie divorced Ernest, married a man named John Cobb, and died of diabetes in 1937 at the age of 50. She was buried with her parents, sisters and daughter. Her obituary did not mention the Osage murders. The film closes with an overhead view of a 21st-century Osage powwow dancing circle.