nine years after james duckett had been sentenced to death, the key witness in his prosecution, gwen gurleyhat she had lied at his original trial. but the presiding judge put a stop to gwen's admission, warning her of perjury charges if she changed her testimony. >> judge lockett told me if i perjured myself that i could be sentenced to the maximum of i think it was seven years for each perjury. so i pled the fifth. >> we asked the judge to grant immunity and he just didn't do it. >> how can you kill somebody, how can you execute somebody and you have a state's key witness that wants to tell the truth and yet because it is not what the state wants, they're going to threaten her with perjury and send her back to prison. what kind of system is that? >> while duckett's appeal was severely weakened without gurley's recanted testimony, beth wells was still able to attack the prosecution's case starting with the tire tracks found near teresa's body. >> that little dirt road had these tire tracks on it. which was a pretty good catch by the detective. so they did the right thing and preserved the t

who placed teresa in duckett's patrol car had recanted her original testimony. >> if they used gwen gurleys a key witness to put me here and if she's no longer telling their lies, that should count for something. >> i can remember when we talked to gwen. well, this is great stuff. she's recanted. she's the only person that saw the victim in the car. so we think, this is going to get us a new trial. [ shutter clicks ] hi there! [ laughs ] i'm flo! i know! i'm going to get you your rental car. this is so ridiculous. we're going to manage your entire repair process from paperwork to pickup, okay, little tiny baby? your car is ready, and your repairs are guaranteed for as long as you own it. the progressive service center -- a real place, where we really manage your claim from start to finish. really. ♪ easy as easy can be bye! >>> nine years after james duckett had been sentenced to death, the key witness in his prosecution, gwen gurley was prepared to testify that she had lied at his original trial. but the presiding judge put a stop to gwen's admission, warning her of perjury charges if she