There's a growing wave of prosecutor-led Conviction Review Units across the country. From within these units, prosecutors re-investigate their own cases to proactively find mistakes and overturn wrongful convictions. Minnesota is getting its own, led by Attorney General Keith Ellison. And in Philadelphia, DA Larry Krasner and Conviction Integrity Unit supervisor Patricia Cummings have won 21 exonerations just in the past three years. But they say it takes a lot of time, money and work - and they'll never get to everybody. Record of Wrong is a KARE 11 podcast that delves deep into the world of the criminal justice system, from the perspective of the people appealing their convictions. This six-part series hosted by KARE 11's Emily Haavik examines the towering obstacles to prove innocence after conviction, and the burden those people carry long after they have been freed. Learn more about the cases we cover at RecordofWrong.com (http://RecordofWrong.com) .