Deputy Chief Brenda Leigh Johnson (Kyra Sedgwick) has a quirky enough personal life (she faces married life and the death
of Kitty this season, not to mention a problem niece — played by Sedgwick's real - life daughter, Sosie Bacon — who overstays her welcome) but what makes the show so good is her loyalty and leadership and the chemistry
of her
team, a squad we have watched mature into a
crack unit
of detectives each working at the top
of their game.