PREVIEW: A Bronx Tale

Josh Mankiewicz tells the story Eric Glisson, who was wrongly convicted of the 1995 murder of a Bronx cab driver. From behind bars, and with the help of those who believed in him, he was able to prove his innocence after serving 18 years of his life in jail for a crime he didn't commit. In a new interview with Dateline, Eric opens up about his life after his release.