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Testing but this caused problems. >> the initial dna analysis on the cup was a profile that 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 association between the dna on the cup and the biological evidence from the two crime scenes. and that was enough to get a search warrant for jeffrey gorton's home. there investigators found hundreds of women's undergar...

Problems. >> the initial dna analysis on the cup was a profile that 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 association between the dna on the cup and the biological evidence from the two crime scenes. and that was enough to get a search warrant for jeffrey gorton's home. there, investigators found hundreds of women's undergarments, panties and hose...

Feet. i was screaming, i mean, blood-curdling screams. he ripped my slip off and he started running. >> after that assault, police found hundreds of pieces of women's underwear in his home. >> this is a dangerous guy. he's knocking women down, he's dragging them into bushes, he's stealing their clothes, he's breaking into their houses. this is someone who's pretty much out of control. >> gorton served some prison time for these assaults in florida before moving back to michigan. since both murder victims had been sexually assaulted and investigators had dna of the killer, they wanted to know w...

Epithelial cells on the cup for testing, but this caused problems. >> the initial dna analysis on the cup was a profile that 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 association between the dna on the cup and the biological evidence from the two crime scenes. and that was enough to get a search warrant for jeffrey gorton's home. there, investigators ...

>> the initial dna analysis on the cup was a profile that showed a mixture. >> meaning 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 association between the dna on the cup and the biological evidence from the two crime scenes. and that was enough to get a search warrant for jeffrey gorton's home. there, investigators found hundreds of women's undergarments, panties and hose. they also fou...