The Walking Dead Season 4, Episode 5, "Internment," centers on Hershel Greene's efforts to manage a deadly flu outbreak at the prison, highlighted by critics for its emotional weight and focus on human resilience. The episode features the climax of the illness and the return of the Governor, setting the stage for significant conflict. Read the full analysis at TV Fanatic . THE WALKING DEAD Season 4 Episode 5 Recap and Review