Miami is a party town full of glamour, cash and celebrity, but, away from the night clubs and the tourist spots, the city has a dark underbelly of violent crime. And so it is perhaps no surprise that Miami-Dade County is also home to a so-called "Megajail". Unlike his 2008 film, Behind Bars, which explored the lives of convicted prisoners inside California's San Quentin Prison, Miami Megajail is an in-depth look at a vast and chaotic holding pen for the unconvicted. Most of the inmates in the Miami jail system are awaiting trial. And that wait can go on for years. In tonight's opener, Louis spends time in one of the most notorious sections of the jail, the fifth and sixth floor of "Main Jail", where many of the most volatile inmates are incarcerated. In large cage-like dwellings which hold up to 24 men, the inmates have developed a strange and violent jail culture. They remain in the cells almost all the time and may only leave for yard time twice a week.