things around the area and they happen to find the green tights of chelsea's. so at that point we have everything accounted for. the we have chelsea's shoes, her tights her costume, her wig and her body. >> everything that is but her killer. coming up -- a months old tip sends the investigation in a promising new direction. the boom, boom, boom, boom? >> yeah, things were adding up. >> or that's what investigators thought until -- >> she put her foot down and she said you're going to want to see this right now. so we stopped and she handed me the lab sheet. >> peace and love that's my motto. >> a peace lover confesses but not to murder. when dateline continues. ut not to murder. when dateline continues. nothing works faster for powerful cold relief. oh, what a relief it is! so fast!