The science of DNA testing can now establish with near certainty who did or didn't commit a crime. Why, then, do inmates remain in prison despite DNA evidence which exonerates them?

"The Case for Innocence" explores this question, profiling four compelling cases where DNA evidence has been ignored, discounted, or kept secret.

Author: PBS: Frontline

http://www.pbs.org/wgbh/pages/frontline/shows/case/