gwen, she said she saw the child get into the police car. >> marshall discovered there was more to gwen gurley, the only eyewitness than jurors had been led to believe. >> i wanted to know how that came about that she would testify against duckett. >> gwen gurley was always getting involved in thefts and involved in disturbances and all of a sudden she becomes a star witness with the worst credibility you could ever have. >> in '87, i was 16, i was a typical teenager, i would say. except i was getting in a little bit of trouble. >> when gurley was in the leesburg city jail -- >> three counts of grand theft. >> the news report of duckett's indictment came on the news. >> james duckett in connection with the killing -- >> and she saw that. she called a female corrections officer over. and told her, i was there.