his name was james elmen. >> elmen was the worst of the worst.lk about he's the poster child of antisocial. it's a clue when the public defenders are afraid of him, when the doctors are afraid of him, when the people at the medical treatment facility are afraid of him. >> i was convinced if james elmen hit the streets of jacksonville again, women were going to start dying again, and i wanted to make sure that those cold case detectives had everything that they had to make sure that we could make the case. >> but investigators wanted to be sure elmen was responsible for julie estes' murder. why? because if he wasn't, julie's killer was still on the loose. >> no, it's not always a hollywood ending. sometimes you don't get any results, cases still go unsolved. >> so, 16 years after julie's murder, the jacksonville police department sent julie's clothes to the u.s. army crime lab in forest park, georgia, one of the most sophisticated labs available. >> the item in evidence included socks and her shirt and jeans, as well as other items from her sexual