Much of the credit for “Conviction” goes to Knafo, an investigative reporter who has written for the New York Times and other publications. His storytelling is smart, restrained and, in a gruff way, formal; the phony familiarity and twee interjections that mar so much podcast narration are nowhere to be heard in “Conviction.” The show is crisply produced by Meg Driscoll, Chris Neary and Saidu Tejan-Thomas. The music, by Haley Shaw, is moody and subdued, a good fit for a tale that shuns sensationalism and finds humanity and complexity in unexpected places.
