With the addition of Glenn Close to its already excellent cast, The Shield entered its fourth season with tensions high and tempers flaring. Aceveda (Benito Martinez) has gained political clout on the City Council, and former Farmington district officer Monica Rawling (Close) is introduced as the new Captain of "the Barn," where she immediately confronts a maelstrom of personal and professional turmoil. His strike team now splintered, Mackey (Michael Chiklis) has returned to routine detective duty, while Shane (Walton Goggins) and new partner "Army" Renta (Michael Pe
