Premise: ``Lockdown'' plunges viewers headfirst into life in the ``big house,'' the gritty underworld of America's maximum-security prisons, where gangs are prevalent, predators stalk their next prey and inmates are armed with deadly weapons. But prison officials have their own weapons in the form of modern surveillance and old-time isolation -- plus steel batons and pepper spray -- to help keep the peace in these miniature war zones.
S04, E07 (First Aired: Dec. 15, 2010)
The Mexican Mafia battles a local prison gang at Bexar County Jail in San Antonio, Texas.
S04, E04 (First Aired: May. 2, 2010)
Life in one of Mexico's most notorious prisons, Centro do Ejecucion do Sanciones.