Teens featured in earlier episodes of the series are revisited to see if their jailhouse experiences had any meaningful impact on their lives.

The Return of "Ice Mike" Troubled teens that attend the St. Clair County Jail diversion program take a lie detector test that reveals some shocking secrets. Inmates "Ice Mike" and "Hustle Man" return (from last season) to confront a BMX-riding stoner, a fearless gangster, a terrorizing bully, and Summer--a promiscuous under age girl who just doesn t say no to older boys--and her paralyzed mom can't stop her. Summer experiences the humiliation of jailhouse make-up and the surprising reaction Ice Mike has to her shameful behavior. Summer freaks out when she sees an inmate strapped into a restraint chair, and going wild. Pot-smoking Austin, 15, discovers an inmate who dipped his hands into boiling oil while high on drugs. Jeremy, 17, is tormented by inmates when they learn he assaulted his grandmother. An entire cell block descends on the four teens--and they have nowhere to hide.

The Return of "Tiny"

A teen visitor to the Oneida County Correctional Facility in central New York takes a seat in a restraint chair, while another young hoodlum gets handcuffed before he even enters the joint.

A man suffering from cancer hopes that a stint in Georgia's Floyd County Jail will teach his angry teenage son an important lesson.

Hardened criminals in the Oklahoma County Detention Center teach a spoiled drama queen a valuable lesson.

Inmates at the Portsmouth County Jail lay some hard truths on a would-be rap star; pugnacious siblings are confronted with difficult choices; officers threaten to extend a disrespectful teen's visit.

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.

A visiting teenage drug dealer fearlessly takes on the taunting residents of a Virginia jail; inmate Nasty Nard greets the newcomers with aggression.

A Texas mother sends her three troublesome daughters to an overnight jail program in Richland County, South Carolina.

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Swampland troublemakers who receive an attitude adjustment include a 17-year-old who uses her looks to her advantage and a young thug who meets a family member behind bars.

In Jacksonville, Florida, four at-risk teens attend a three-part "scared straight" tour. Towering over nearly everyone, KeShawn, 15, is intimidated by no one. But when KeShawn witnesses his pint-sized little brother, Kevon, suffering the terrifying consequences of trying to imitate his big bro, KeShawn breaks down, and gets a glimpse of what the future holds for both of them. Also, Johnny, a white, self-proclaimed racist, endures the wrath of the black inmate population.

A young drug dealer, a child model and twin bullies enter a Georgia jail for a personal experience of the criminal-justice system.

A promiscuous teenage troublemaker shares a cell with a relative in Virginia's Western Tidewater Regional Jail, only to learn that family bonds aren't strengthened behind bars.

New visitors to the clink include a light-fingered football prodigy, a pot-smoking teen from the suburbs, and an aspiring rap star who thinks that hard time will improve his rhymes.

Authorities hope a tour of prison will knock some much-needed sense into some troublesome teens from Southern California's San Bernardino County.