In the city by the bay it'll take two experienced FBI agents to bring an end to a serial killer's reign.

The quicker Special Agent Christina Sandoval brings a serial killer to justice, the sooner she can get back to her daughter. Reason enough for the FBI to send her a partner–who also happens to be her ex–fiancé, Eric Brody.

While Eric's own kidnapping as a child has left him with a sense of justice that never failed, his relationship with Christina had. Now the deeper they dig into the current case, the more personal things get. Trying to capture an elusive killer who seems to know more about Christina than Brody ever did, they'll both need to stop holding back. Or fall victim to this private war, waged without boundaries...