Investigative journalist Raphael Rowe spends a few days -- both as a guard and a prisoner -- inside Brazil's gang-filled Porto Velho Penitentiary.

1 、哥斯达黎加：双面刃监狱 Costa Rica - Prison On A Knife-Edge
　　2、 哥伦比亚：毒枭监狱 Colombia - Narco Prison
　　3 、罗马尼亚：吉普赛监狱 Romania - Gypsy Prison
　　4 、挪威：完美的监狱 Norway - The Perfect Prison