Sho Brown

Patrick Jane and the CBI team delve into the world of professional fighting when the body of a woman is found at a mixed martial arts match - with ties to one of the fighters. Meanwhile, Professional Standards Unit Investigator LaRoche focuses his investigation on Rigsby, who in turn is forced to ask Cho for a huge favor in order to keep his job.

Brother Mouzone returns to Baltimore.

Carcetti maps out a damage-control scenario.

Templeton makes headlines; Bunk follows up on old leads; McNulty takes an interest in the homeless.

Campbell tries to facilitate the transitions in the police department.

The guys are put on edge when Neal starts cutting costs in the office to prove to the boss that he is "all man." Milo winds up in jail after attempting to get firsthand inspiration for an article about drug trafficking. And Tyler ends up in hot water when he runs into an ex girlfriend.