On 31 May 1921, in the city of Tulsa, Oklahoma, a mob of white men and women reduced a prosperous African American community, known as Black Wall Street, to rubble, leaving countless dead and unaccounted for, and thousands of homes and businesses destroyed. But along with the bodies, they buried the secrets of the crime. Scott Ellsworth, a native of Tulsa, became determined to unearth the secrets of his home town. Now, nearly 40 years after his first major historical account of the massacre, Ellsworth returns to the city in search of answers. Along with a prominent African American forensic archaeologist whose family survived the riots, Ellsworth has been tasked with locating and exhuming the mass graves and identifying the victims for the first time. But the investigation is not simply to find graves or bodies - it is a reckoning with one of the darkest chapters of American history.