Watch "Lockdown" on Netflix USA

Pelican Bay has been at the heart of California's war on prison gangs for two decades. A former gang member reveals the prison's innermost secrets when "Lockdown" takes you to the frontlines of this terrifying battlefield.

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"Lockdown" goes inside one of the country's most secure prisons: Oak Park Heights Supermax.

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"Lockdown" takes you inside Ohio's Lebanon Correctional Institution for a look that the public doesn't get to see.

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As violence escalates between rival prison gangs, prison staff fear they're on the brink of war.

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Last year, Valley State Prison for Women recorded its first inmate murder, demonstrating that women can be every bit as violent as men. With 3,900 violent female offenders, officers are searching for ways to stop the drug trade and reduce violence.

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Step inside the Utah State Prison, where one in four of the state's most dangerous criminals have gang ties. Find out why the imates put their gang first, no matter what -- even if it means losing custody of their children.

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Wyoming State Penitentiary is severely understaffed and overcrowded. How will three new recruits face the challenges of officer training, manipulative inmates and working in a dangerous environment where escape and murder are realities?

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What's life like in Phoenix's Tent City, where 2,000 inmates are housed in Korean War-era tents? How do officers maintain order with military-like discipline?

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Imagine trying to study surrounded by murders and rapists. Prisoners face this challenge daily while participating in a college education program run by inmates.

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In Iowa's Fort Dodge Correctional Facility young offenders are sent straight into the lion's den -- the cellblocks and the yard, where predators and gang members lurk.

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Meet an attractive mother with a cocaine habit; a heroin addict jailed 32 times; and a charming but unpredictable bipolar inmate. How will they manage the harsh conditions in county jail along with their personal challenges?

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At Stateville Correctional Center in Illinois, we go inside one of America's oldest and most notorious prisons, where inmates are often locked down 24 hours a day for days at a time.

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With the highest homicide rate in the nation, the streets of Detroit are rampant with violent crimes, drug abuse and prostitution. But at the city's Wayne County Jail, female offenders are offered one last chance to clean up their lives.

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At Colorado's innovative Youthful Offender System, violent juvenile felons are given a last chance at a crime-free life before going to adult prisons. But if they fail, hard time could mean sexual abuse or risk of suicide.

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Child molesters and rapists are the inmates most despised by other prisoners. This episode gives a rare opportunity to hear a firsthand account of their terrible crimes, the impact of treatment and the dangers of life behind bars.

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At St. Louis County Jail tensions could erupt at any moment, but for each unit of 67 inmates, there's just one corrections officer -- armed with nothing but a panic button and pepper spray -- to keep all hell from breaking loose.

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The newest and largest prison in Colorado is home to more than 2,000 killers, kidnappers and drug dealers. Here, the warden and his team must control some of the toughest and most aggressive offenders and even work to turn them around.

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Just a few miles south of the U.S. border lies one of Mexico's most notorious penitentiaries. Meet Rogelio, a suspected gang member; Raul and Rosi, who fell in love behind bars; and Vincent, an American in solitary for his own protection.

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"Lockdown" goes behind the razor wire for an in-depth look at Cleveland's Cuyahoga County Jail. See the drama unfold as the Special Response Team faces a new gang that preys on other inmates.

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