It’s been eight months since Dan’s investigation into JJ’s case aired on Dateline. When he visits JJ at Sing Sing, JJ is frustrated—he thought he’d be out by now. But the Manhattan DA is looking into his case. In 2010, Manhattan DA Cyrus Vance created a conviction integrity unit focused on investigating claims of innocence. Bob Gottlieb and Celia Gordon, JJ’s lawyers, are confident that this unit will determine that he was wrongfully convicted.

Meanwhile, Bob and Celia hear from a woman who claims she and a friend know Mustafa: the NYPD’s “primary target” for the murder of Al Ward. Dan follows up on this lead and travels to Seattle, where he interviews both women. They tell him their friend Mustafa confessed to killing Al Ward. Dan tracks down this Mustafa, and in a tense interview, tries to determine whether this man is the real killer.