his name is frankie coreo. in 1991, he was just 18 when he was convicted of murder. witness testimony. during a time in their lives, most people, in their lives, are going to college, building a career, or starting a family. frankie was behind bars, desperately trying to prove his innocence. he took 20 years. but frankie was finally released from prison after five witnesses changed their stories. he is just one of 2,000 people who, since 1989, have been wrongfully convicted. of those 101 were sentenced it death. for the first time, we are learning their stories from a brand new data base of exonerated prisoners. it is an important new tool in the fight for justice. more than 2 million people are behind bars today. while most are guilty, some, like frankie, are innocent. that's why this data bank could be the first step in a fight for justice. joining me now is frankie coreo, who, as i mentioned, spent two decades in prison before his release last year. and university of miigan professor samuel gross, co-phoneder and editor of this new exoneration registry. thank you