It's been five-and-a-half years since Greg Stampley died at Stillwater state prison. Stampley was a severely mentally ill inmate who died while locked in an isolation cell. The case raised questions about the treatment of Minnesota's mentally ill prison inmates. The state eventually aid Stampley's family to settle a lawsuit. In part two of our series on incarcerating the mentally ill, John Biewen of MPR's national documentary unit, American RadioWorks, reports on changes in the state prison system since Greg Stampley's death.