Extra: extended interview with DNA expert Erik Hall

Erik Hall runs the forensic science program at Saint Louis University. He spoke to First Alert 4 about the DNA reports in the Fredrico Lowe-Bey case. 

A single eyewitness' testimony of what she saw in a dimly light alley was enough to convict Fredrico Lowe-Bey of rape and send him to prison for life. He's been trying to prove he's innocent for 37 years, and he's got one last chance to do it.