Colorado Springs, late 1970s. Ron Stallworth, an African American police officer, and Flip Zimmerman, his Jewish colleague, run an undercover operation to infiltrate the Ku Klux Klan.
Dr. Steven Murphy is a renowned cardiovascular surgeon who presides over a spotless household with his wife and two children. Lurking at the margins of his idyllic suburban existence is Martin, a fatherless teen who insinuates himself into the doctor's life in gradually unsettling ways.
When oil is discovered in 1920s Oklahoma under Osage Nation land, the Osage people are murdered one by one—until the FBI steps in to unravel the mystery.