CNN Forensic Files May 17, 2015 06:16:00
But one of their scientific experts had a suggestion. >> i said we need to get a sample that was more intimate from him. we need to get a sample which he had touched or used, such as a cigarette butt or a toothbrush, or an item of clothing. >> but that wouldn't be easy. it seemed planten knew he was being followed. >> surveillance was conducted on drew planten for a week, at work and at home, and we could not obtain any dna from that week's worth of surveillance. >> ultimately, investigators followed planten to a restaurant. but planten was one step ahead of them. >> he ate nothing but finger ...