Reasonable doubts

More than 300 exonerations based on DNA evidence have shown how often the U.S. justice system sends innocent people to jail. They have also inspired a new wave of cases that allege police misconduct, unreliable eyewitnesses, and incompetent defense. In this collaboration with WBUR, we investigate the case of Darrell Jones, who's served 30 years for a murder he says he didn't commit.