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.