questioned the driverer. man named larry hall. hall said he had been looking for a friend's address but the address he gave didn't exist. officers let paul go. september 20th, 1993, six months aftertrisha's disappearance now 15-year-old jessica roach goes missing in georgetown, illinois. investigators gary miller got the call. >> we all knew we has something really bad here. we had an abduction. >> jessica's badly decomposed body was found in an indiana corn field weeks later. then like trisha's, jessica's case went cold. >> there's a lot of times you wonder if you'll solve it. you will recheck everything out. >> for over a year mill her scoured local police reports and