Behind the walls of six maximum-security prison in Serbia, Poland, and the Czech Republic.

Life inside prisons throughout Scotland and Belgium.

Cameras give a glimpse into prison conditions in Israel, venturing into three prisons there.

Behind the scenes of the reality crime series "Lockup," as producers offer candid interviews and previously unaired footage of some of the most memorable inmates spotlighted on the program.

The "Lockup" franchise has become a staple of the MSNBC schedule, with each series in the franchise taking place in a different prison. This entry is filmed at the Wabash Valley Correctional Facility in the rural Indiana town of Carlisle. The prison's population, 2,200 male inmates, dwarfs the town's population of just several hundred residents. The majority of Wabash's inmates used to come from urban areas, but now they come mainly from rural farming communities, because of the rise of methamphetamine use. Many of the stories in the series revolve around the meth epidemic and the strict sentences that are handed down, including half brothers who are serving 54- and 35-year sentences for various meth-related crimes. Also housed at Wabash are several of Indiana's high-profile murderers.

This documentary series takes viewers inside prisons and jails across America and around the world, offering rarely obtained and comprehensive access into these locations. The show profiles the inmates and employees who work at these facilities, highlighting their day-to-day experiences and interactions within the confines of prison. By bringing audiences the real, raw stories of life behind bars, this program aims to provide a truly authentic and in-depth look inside the complex criminal justice system.

The long-running "Lockup" reality TV franchise interviews inmates and employees at correctional facilities around the world. This series focuses on women in prisons across America. The show tells stories of female inmates, including the challenges they face whether they're locked up for small infractions or major crimes. The populace of the facilities ranges from teenagers to a grandma and includes prisoners that include first-time offenders and gang members who are used to living lfie behind bars.

With unrestricted access to maximum security prisons, each hourlong episode of this series brings viewers inside an often seedy world where every day is a fight for survival.

More women than ever are working as guards in the toughest prisons in the U.S. This series brings cameras inside some of those facilities and, combined with interviews with female correctional officers, viewers witness firsthand the danger and mind games involved in this job.

"Louisiana Lockdown" takes viewers inside Louisiana State Penitentiary (also known as Angola Prison), one of the largest maximum security prisons in the United States. It houses more than 5,000 violent offenders, leading to its fierce reputation -- dating back to 1901 -- as a brutal penitentiary with a history of riots and murder. It also has a very unique setup. While many of the prisoners serve their time in solitary confinement, others earn the privilege of raising animals and training for the annual prison rodeo on Angola's secluded grounds, which measure 18,000 acres. Also, the warden and the staff reside at the prison and raise their families alongside the inmates they oversee.