Holding 6,000 prisoners and processing more than 100,000 people a year, Miami's mega jail is a transitory place for those awaiting sentencing, trial, and charges. Mega jails are a new phenomenon in America as the country struggles to process its growing criminal class; conditions are tough, dark ,and uncompromising. Depending on the nature of their crime, some prisoners are in and out in hours while others might be there for years. In Part 1, Louis Theroux speaks with inmates housed on some of the most violent jailhouse floors in the country and receives insight on the accepted culture of violence. He meets a collection of people thrown together - some innocent, some guilty and none yet proven either way