Generations ago, the American Indian Osage tribe was compelled to move. Not for the first time, white settlers pushed them off their land in the 1800s. They made their new home in a rocky, infertile area in northeast Oklahoma in hopes that settlers would finally leave them alone.
As it turned out, the land they had chosen was rich in oil, and in the early 20th century, members of the tribe became spectacularly wealthy. They bought cars and built mansions; they made so much oil money that the government began appointing white guardians to "help" them spend it.
And then Osage members started turning up dead.
In his new book, Killers of the Flower Moon, David Grann describes how white people in the area conspired to kill Osage members in order steal their oil wealth, which could only be passed on through inheritance. "This was a culture of complicity," he says, "and it was allowed to go on for so long because so many people were part of the plot. You had lawmen, you had prosecutors, you had the reporters who wouldn't cover it. You had oilmen who wouldn't speak out. You had morticians who would cover up the murders when they buried the body. You had doctors who helped give poison to people."