Follows the story of a young woman who commits horrific acts of violence and rage, and to her surprise, has no idea why. And the investigator who becomes obsessed with the case and is determined to dig into her past and figure out why this is happening.

In early 90s Boston, an African-American District Attorney comes in from Brooklyn advocating change and forms an unlikely alliance with a corrupt yet venerated FBI veteran invested in maintaining the status quo. Together they take on a family of armored car robbers from Charlestown in a case that grows to encompass and eventually upend Boston’s city-wide criminal justice system.