frudakis found a marker in one of the killer's genes that indicated he had blue or green eyes and mostlored hair. >> i was glad they had done it. it made me more hopeful that eventually they would be able to determine who the perpetrator was. >> police released this new information to the public, hoping someone in the community would recognize him. >> tonight, there's a new development in the murders of two napa women. >> and there was a man living just two miles away from the murder scene who was listening to every word. >> they say he's white, has blondish hair and most likely has green eyes. >> he now knew two things, that he made too many mistakes and the dna technology had advanced far beyond anything he could ever have imagined. the same time, police asked the surviving roommate, lauren meanza, if she knew anyone who smoked this brand of cigarettes. >> she had let us know, well, the only smoker i can think of at this point is eric copple. >> 25-year-old eric copple was a land surveyor and a friend of one of the victims. but before police could question him, copple walked into pol