he Osage Indian ceremonial town of Grayhorse (also Gray Horse, Greyhorse) is located author David Grann visited, the Grayhorse people did not tell their story. However, when Martin Scorsese and the film crew arrived, the Grayhorse people called a meeting and spoke of their own Reign of Terror. That horror will be part of the three-and-a-half-hour movie, which goes some way to commemorating the role of Grayhorse and the astounding number of people permanently resting in the Grayhorse and Fairfax cemeteries.
