As a special preview for Dateline listeners, we’re sharing an excerpt from the second episode of Letters from Sing Sing, a new original podcast from NBC News Studios. Letters from Sing Sing tells the story of a man convicted of murder, his fight for justice, and how the letters he sent NBC News producer Dan Slepian sparked a 20-year investigation that changed both of their lives. Follow the podcast and listen to the first three episodes now: https://link.chtbl.com/lfss_fdd