>> the jury also heard from a jailhouse snitch that said ferris confessed to him. the snitch, like some other trial witnesses, did not wish to be photographed. >> he said he killed a woman, he said he strangled her. >> prosecutors called an ex-girlfriend who said ferris made strange statements while riding in a car in 1976, two years after cheryl miller was killed. >> he just kept saying, i didn't mean to do it. i didn't mean to do it. >> was gabe ferris his own worst enemy? >> well, i think there's no question about that. gabe ferris told enough people, enough things, to allow us to present evidence that would be corroborated in his own words. he was, in fact, the best evidence against him. >> but what physical evidence was there to back up those claims? how could prosecutors prove to the jury that ferris was the man who on june 15th, 1974, was in cheryl miller's bedroom with his hands around her neck squeezing the last breaths from her dying body?