Southland Season 4 Episode 1

In the Season Four premiere, Officer John Cooper returns to duty after recovering from back surgery and meets his new partner, Officer Jessica Tang (special guest star Lucy Liu), a tough and disciplined cop with her own set of baggage from working the streets. Lydia, whose new partner is Ruben Robinson (guest star Dorian Missick), can't seem to escape helping a former CI who won't stay in safety. Ben, Sammy and Dewey chase an armed man into an elementary school, while Ben bumps heads with an intense street cop (guest star Lou Diamond Phillips) whose cynical attitude is affecting their work.