Then divine intervention through a nun he called grandma. Eric would say, grandma, i think this all happening for a reason. Maybe a nun could help him get into heaven, but could she help him get out of prison . What she helped him do was get a lawyer, and together they hunted for the truth. This is the one case that has kept me up at night for six years. He says i know youre innocent, i know the guys who committed this crime. Will justice finally arrive . Hello and welcome to dateline. Eric glisson was just 20 years old when he was convicted of a murder that sent shockwaves through his neighborhood. A crime he insisted he did not commit. To clear his name eric would have to find the real killers, following clues from the confines of his cell. It would take years for the truth to come out. But would it be enough to set him free . Heres Josh Mankiewicz with a bronx tale. Sing sing correctional facility. The maximum security prison in new york. This is the big house. Home to some of the w