Question: what episode does prentiss come back?
Answer: Brewster returned to her role for the show's seventh season. Her final episode as a main cast member was the May 16, 2012 episode "Run." Brewster reprised the role again in 2014 for the 200th episode. She returned as Prentiss following the departure of co-star Shemar Moore for the season 11 episode "Tribute".