120 Hours Behind Bars

In Bristol County Jail, half of the cells don't lock. As changing demographics bring in more violent, gang-affiliated criminals, staff must manage a higher-risk population without the facility slipping into chaos.

In rural Leake County, Mississippi, a small jail battles a big meth problem; with repeat offenders entering the jail daily, local law enforcement works to break the cycle.

Virginia Beach is a party town with a vibrant nightlife, making its Correctional Center one of the busiest city jails in the state. Here, some inmates arrive to go on vacation, then leave on probation -- and return on a violation.

Over-capacity and on the brink, Louisiana's Washington Parish Jail is spiraling into chaos; the new sheriff struggles to bring stability and control while facing the mistakes of the past.

Inside one of Nevada's busiest jails, deputies battle a non-stop surge of arrests driven by Reno's constant crime and a major trafficking corridor; with gangs entrenched inside, keeping rival groups apart becomes a daily fight for control.