You might be thinking like we are: If there's a whole effort devoted to exonerating those who have been wrongfully convicted - more than one, actually - then there must be a bunch of people in jail who shouldn't be there. If so, you would be correct.

David Moran is the director of the Michigan Innocence Clinic, a unit of the University of Michigan Law School. The Clinic is exclusively dedicated to researching cases suspected of being wrongful convictions, and attempting to move forward with reversing those decisions if new evidence is uncovered. The Clinic is the body that dug into - and thus helped to reverse the Lorinda Swain case in Calhoun County.

Moran tells WBCK it is estimated that about 3-5% of convictions are wrongful; that makes for about 1200 people in Michigan who are in jail for crimes they didn't commit. Nationally, that number extrapolates to about 50,000-60,000 who have been incorrectly convicted.

Click the player below to hear Moran's impressions about these statistics, the Swain case and the overall challenges involved with his work.

Hear The Richard Piet Show weekday mornings from 5:30-9 on WBCK.