Annamarie Kenoyer

Torres’ half-sister, Ava, who is incarcerated in a juvenile corrections facility, mysteriously re-enters Torres’ life when a fellow inmate vanishes. Meanwhile, the Lightman Group becomes embroiled in a case that forces the sisters to revisit their troubled upbringing.

When officers John Cooper, Ben Sherman and Chickie Brown rescue a baby girl found alone crawling across the middle of an LA intersection, the hunt for her mother begins. Detectives Lydia Adams and Russell Clarke examine the scene looking for clues, and soon Lydia finds herself affected by the search and must deal with some past issues – taking a personal interest in reuniting the baby with its mother. Meanwhile, officers Sammy Bryant and Nate Moretta are unable to find the financial resources to put a juvenile key witness in police protection after an attempt on her life and must now convince the DA to place her in a student police program. And back at the station, everyone gathers for a retirement party for Dewey.

After Bert successfully reads 100 books, Kate and Pete throw him his dream birthday party; Warren befriends the guy Hillary has a crush on.

It's a cop's worst nightmare. After a drunken car accident, Detective Salinger's gun is stolen by gang members in a dangerous neighborhood. When Gang Squad Detectives Nate Moretta and Sammy Bryant arrive on the scene to help out their boss, Moretta reluctantly agrees to assist Bryant in the search for the perpetrators and Salinger's weapon without calling it in. Launching an off-the-books manhunt to retrieve the weapon, they make a disturbing discovery – that the gangs are no longer afraid of the police; a local gang is using assault weapons, bullet-proof vests and military tactics to become a powerful urban street army – ready to declare war. Elsewhere, still preoccupied with her personal life, Detective Lydia Adams is caught off guard when a man exposes himself to her outside her home.

Season Finale. The day takes a turn for the worse when officers John Cooper, Ben Sherman, Chickie Brown and Dewey find a member of Marta's Avenue gang dead in a trunk outside Dodger Stadium. Meanwhile, Detective Bryant convinces Lydia to take in Janilla in order to ensure her safety. Elsewhere, Detective Salinger becomes increasingly frustrated with his growing rift with his teenage daughter.