The Wire season 4 received high praise, but fans might have noticed the absence of Dominic West's character, Detective Jimmy McNulty, throughout the season. Despite this, the season was still critically acclaimed. McNulty, known for his bright personality and dedication to justice, finds himself demoted to being a patrolman in the Western District. This change in his role allows for a more peaceful time in McNulty's life, as he is no longer conflicted with solving monstrous cases or dealing with higher-ups.

The near absence of McNulty in season 4 was a personal choice made by Dominic West, who needed to be home with his daughter in England. West returned in season 5 with a storyline centered around McNulty. Although season 4 focused less on main characters, it delved deeper into the injustice of urban life.

Despite McNulty's absence, The Wire season 4 was the highest rated season of the series, as it focused more on the show's themes and sense of realism. While McNulty is a beloved character, some of his plots in other seasons were far-fetched and unbelievable, contrasting the show's overall realism.