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Watch Lockup Season 22 Episode 4 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

It's estimated that more than 600,000 people will be released from Americas prisons this year. But will they be prepared to rejoin society as productive citizens? Each year, our nation spends about 24 billion on its prison system. For the men and women living and working in that system, the daily challenge is simply to survive. MSNBC Investigates what goes on behind the bars, and inside the minds of prisoners and guards. .