GIRLS DON'T CRY AS CRUZ GETS EVEN TOUGHER IN PURSUIT OF HOMICIDAL GANGBANGER -- HELEN MIRREN GUEST STARS -- After getting some bad news of her own, Sergeant Cruz (Tia Texada) puts on her game face to find a chief gangbanger (as Haddox, guest star David St. Louis) who is responsible for killing a hostile murder witness and trying to hide the dead man under another body in a hearse -- and the stakes are raised when the gang leader kidnaps the teenaged sister of another witness. Meanwhile, paramedic Grace (Cara Buono) is chilled when she believes she's found her long-lost mother (guest star Helen Mirren) -- a junkie living on the streets. In addition, a recovered Officer Bosco (Jason Wiles) has doubts about his return to the force and Officer Monroe (Nia Long) reluctantly must share her health secret with Sully (Skipp Sudduth). Coby Bell, Molly Price, Anthony Ruivivar and Josh Stewart also star. TV-14