Eliot Ness has deemed the notorious gangster off limits, while Director J. Edgar Hoover has taken note of Saul and Christian's activities and has his own plans for the two agents. Meanwhile, Mr. Brown's mysterious master finally reveals herself, putting Saul's family in more danger than they've ever been before. Saul's life is changing again, and not for the better. Will the choices Saul must make in order to save his family, stop Capone, and deal with the new threat be worth the price he must pay?