Behind Bars: Rookie Year

Lilly is desperate to prove herself but gets stuck on traffic duty; D'Angelo goes head to head with a troublesome inmate; Mangin and Cordova face a new challenge when a dangerous ex-gang member leaves his cell unrestrained.

Israel is pushed to the limit by a combative inmate; Lilly is disrespected while working with inmates for the first time; Cordova fails to uncover hidden drugs in a gang member's cell; Andrew struggles with intense training.

The rookie officers work to assert their authority over the inmates; Ariel supervises a death-row inmate; Lilly faces a pod full of disorderly gang members; Purto returns to work following an assault and another inmate soon confronts her.

Antagonistic inmates cause trouble for Purto and D'Angelo; Lilly takes charge of a prison work program; Andrew wonders if he can handle the demands of the job.

Mangin and Cordova subdue a threatening gang member; Israel bucks prison protocol when an inmate harasses him; Lilly finds drugs in a mail delivery; Purto assists with the discharge of a high-risk inmate.

D'Angelo has a difficult time catching inmates with contraband; Lilly learns a hard lesson about trust when a phone goes missing in the pod; Purto interviews a gang member; a new rookie hopes to live up to his father's legacy.

Mangin and the extraction team must forcibly remove an inmate from his cell; Israel makes a mistake when he performs a drug test; Fabian loses track of inmates in his unit; Ariel starts a new post and attempts to establish her authority.

The rookies work to find evidence to take down the prison gangs; Purto assists in a major drug bust; D'Angelo finally locates drugs in the dormitory; Fabian seeks help from his brother.

Lilly works control in a locked-down prison-gang pod; Chaz prepares for an extraction; Javier excels in the training academy; a major mistake threatens Fabian's job; Ariel fails to show up for work.

An inmate swallows unidentified contraband; gang members brawl in Chaz's unit; Javier works yard duty for his first assignment; a stressed-out Ariel calls it quits, while D'Angelo seeks more action.

The administration steps up efforts to take down the SNM gang; Purto learns that his life may be in jeopardy; a leader of the SNM gang shares his story; Mangin and Cordova hit their one-year anniversary as COs; Chaz comes into his own as an officer.

The rookies help put the final nail in the SNM gang's coffin; Javier conducts his first extraction; Israel considers a job change in light of recent news; Mangin and Cordova offer their knowledge to a new class of cadets.