F.B.I. Special Agent Gabriel Santana and his elite team continue to track the killer of multiple African-American police officers across Virginia. As the clues unfold, Pratt, the incarcerated militia leader who has been coerced into helping Santana, provides detailed insight into the Mountaineer Militia - the group he led before his conviction, and the focus of the investigation. But is Pratt actually cooperating, or is he only manipulating the team and biding his time?