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 "Conviction" series Thursday, March 24th on nbcnews.com. » Subscribe to NBC News: nbcnews.to/SubscribeToNBC » Watch more NBC video: bit.ly/MoreNBCNews NBC News is a leading source of global news and information. Here you will find clips from NBC Nightly News, Meet The Press, and our original series Debunker, Flashback, Nerdwatch, and Show Me. Subscribe to our channel for news stories, technology, politics, health, entertainment, science, business, and exclusive NBC investigations. Connect with NBC News Online! Visit NBCNews.Com: nbcnews.to/ReadNBC Find NBC News on Facebook: nbcnews.to/LikeNBC Follow NBC News on Twitter: nbcnews.to/FollowNBC Follow NBC News on Google+: nbcnews.to/PlusNBC Follow NBC News on Instagram: nbcnews.to/InstaNBC Follow NBC News on Pinterest: nbcnews.to/PinNBC The First Day: Episode 1 | Conviction | Dateline NBC