>> sandy greenman is avery's long-time friend and one-time fiancee. she says she searched for years to find an attorney to take on his complicated case. from prison, avery told her to watch "dateline." >> there was a case on "dateline." and he told me to watch it just to see the lawyer. >> that "dateline" program, told the story of ryan ferguson, a young man sitting in prison for a murder he said he didn't commit. attorney kathleen zellner was determined to get him out. >> nothing is as riveting as this. when the trial has been lost, it's innocent. i think it's the ultimate challenge. >> i said that's the woman that's going to get steven out of prison. >> she works on wrongful conviction cases and has freed many defends, including ryan ferguson.