her former lover fred androse denied it was him, although he refused to provide a dna sample. >> we knew't jeff, and we're thinking it had to be fred. who else would it be? because we absolutely could find nobody else that was involved with susan that would have had sex with her a couple of days before the murder. >> so the detective called androse and set up a trap. >> i told him i would bring him lunch. he said sure, that's great. i brought him hamburger, french c fries and a drink. i said here's your lunch, fred. but andros said he wasn't hungry and didn't touch anything. the sun was coming in through the car. he had a flannel jacket on. i cranked up the heat, hoping to kind of sweat it out of him. >> the car got hotter and hotter. but andros still wouldn't touch anything. >> so i cranked up the heat more. so he went ahead and took a drink. once he took the sip out of the straw, i knew i had what he wanted. >> essentially, fred is handing over his dna. >> tests confirmed that fred andros' dna matched the dna taken during susan fassett's autopsy. >> within 48 hours of her death, he had