Publisher: W. W. Norton & Company

The inside story of how a courageous FBI informant helped to bring down the KKK organization responsible for a brutal civil rights–era killing.

By early 1966, the work of Vernon Dahmer was well known in south Mississippi. A light-skinned Black man, he was a farmer, grocery store owner, and two-time president of the Forrest County chapter of the NAACP. He and Medgar Evers founded a youth NAACP chapter in Hattiesburg, and for years after Evers’s assassination Dahmer was the chief advocate for voting rights in a county where Black registration was shamelessly suppressed. This put Dahmer in the crosshairs of the White Knights, with headquarters in nearby Laurel. Already known as one of the most violent sects of the KKK in the South, the group carried out his murder in a raid that burned down his home and store.