and a third name is jo ann jackson. like sissy, jo ann says she was home. in bed.> i don't have any reason to be implicated in this whatsoever. you know. i had -- i went home. i talked to my mother. >> do you know what time of night that was? >> around 11:00. >> and after that you have no idea what happened? >> no. >> jo ann jackson's fingerprints and palm prints have also been compared to those left at the scene. no match. yet, there are several others centurion says, at least four women and two men, who might have been there, whose prints have never been compared. a lot of kids were home by 11:00 that night it turns out. >> well, i don't know why. you know, i just don't understand. because my sister was with me. and that's the weird thing. you know, they must have questioned her 10,000 times, too, and she said the same thing. >> so where does all this leave barry beach? what is the truth? well, centurion's investigation would soon lead to something beach had been seeking for decades. a remarkable hearing. unlike any ever held before in the state of montana, maybe