when gorton left, an officer rushed to the table, confiscated gorton's cup and took it to the forensicsab. the sample was tested immediately. >> dna is like any other biological molecul showed a mixture. >> meaning that more than one person had used the cup. >> we had hoped that we would pick up dna just from the individual that drank out of the cup, but there was some indications that there was dna from more than one person there. >> but pcr dna testing showed a strong associat gorto ioffrey gorton's and they > is it, >> mostly just the hose, i guess. >> do you still feel those strong fetish desires to this day? i mean, is that something that -- >> yeah, i see a psychiatrist for it for a little while i was on my own. >> gorton denied he was ever inside margarette eby's home. when he did, investigators confronted him with fingerprint evidence. >> do you know where that fingerprint came from? >> no. >> it came from the bathroom in the upstairs bedroom where margarette eby was found. >> mm-hmm. >> the house that you said you had never been in. so, right now, jeff, there's no degrade dna a