PREVIEW: Dateline Digital Series 'Conviction'

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Richard Rosario has spent two decades behind bars, insisting for every one of those years that 13 alibi witnesses could prove he was innocent of a 1996 New York City murder. Over the past two years, Dateline NBC producer Dan Slepian has been investigating Rosario's case. Was Rosario wrongfully convicted? You can watch the full series on datelinenbc.com.