' word. >> without noel stephens' statement to the police, george is an innocent man. >> the report -eporter: the jury believed stephens, said the defense. even his friend the tipster big will said the man was an habitual liar. >> at a scale of 1 to 10, i would put him at a scale of maybe 1 1/2. >> 10 being very honest and -- >> 1 1/2, meaning not honest at all, correct. >> reporter: george's attorney was itching to cross-examine the habitual liar who condemned his client which presented prosecutors with a dilemma. the man at the center of the case might just destroy it. >>> could be a real problem. >> he could be a real problem. there was a substantial amount of discussion between him and i over whether or not we're calling him or not. >> reporter: does that imply you disagreed? >> oh, yes, we disagreed. >> coming up, a risky decision looks like it might just backfire. >> do you hear voices? >> yes. >> do you remember saying to that person that they sounded like monsters? >> yes. >> not just voices, hallucinations, too. >> what kind of hallucinations? >> i see shauna sometimes. >> wh