Roy Cohn's obsession with David Schine leads to the televised Army-McCarthy hearings and national scandal as McCarthy's allies attack Senator Smith, threatening to expose family secrets. Hawk tries to protect Smith while hiding his secret life from Lucy, although a tragedy brings them closer. Marcus must decide between his love for Frankie and his new job at the Post. Exposed to McCarthy's – and Hawk's – true natures, Tim makes a life-changing decision about his future.