i come -- >> and this is what life met for pertarco now. a small section of a dormitory whicwith a few black and white photographs of his family. he's outlived all of them. >> extra consideration for release? >> yes i do. >> can you explain why? >> because they're harmless. >> plutarco is not alone. in fact he's part of a growing american trend. in the last decade the number of prisoners has grown an astonishing 75%. the u.s. took a tough on crime approach. and the older a prisoner is the bigger financial drain they pose. an older inmate play cost about $75,000 a year to lock up. two to three times more than younger inmates. older inmates suffer functional diseases, major diseases and mental illness. >> my world wears white in a day of black fleet. it holds bitter cold with its pal e purple teeth. wanting more more more. >> correctional center is oklahoma's largest women's prison. this state incarcerates more women, reading or writing poetry than they are but they're also convicted killers. >> smile with your broken teeth mourning in the mo