The Correctional Institution for Women in Mandaluyong City is the oldest and largest women's prison in the Philippines, built in 1931 to hold one thousand inmates and now holding roughly three times that number. Cameras go inside the dorms where petty thieves, drug dealers, gang members, and convicted murderers share cramped quarters, and follow the daily headcounts meant to catch escapes before they happen. Inmates handle gas canisters, knives, and other tools as part of prison work, and a small staff of correction officers, vastly outnumbered by the population they guard, leans on privileged prisoners given informal authority to keep order among the rest. Interviews with inmates and staff lay out how the compound actually functions day to day, from High Value PDLs held under closer watch to the informal hierarchies that fill the gap left by too few guards. The episode is part of the Behind Bars: World's Toughest Prisons series, and its footage inside the facility, rather than any outside commentary, carries the story.