In the fourth-season opener, In a city where your neighborhood defines your gang, four at-risk teen girls endure a day in a female jail and learn where their lives are headed. Though they walk into the jail together, the teens will turn on one of their own. Thalia, 15, is a frightening street brawler (she s even hit her own grandmother) who takes her fight to the inmates and deputies. When she refuses to taste jail food, the other teens force her. Jahmiya, 15, incurs the wrath of female inmates with thick Boston accents, when she uses a derogatory hand gesture. But it is Jahmiya, the scrappy thief, who leads the other female delinquents to gang up on Thalia, forcing her to take in parts of jail life no one should have to stomach. Pot-smoking Tina, 16, is shocked when deputies chain all the teens together.