>> that would destroy the dna profile of the blood the fingerprint was left in. >> investigators decided the risk was worth it. the print was sprayed with amino black, a chemical dye that reacts with the proteins in blood. >> we decided it was as good as the print was going to get. >> the result was a partial print of a fingertip. investigators entered the print into the nationwide database of known criminal offenders and the result was bad news. >> i was not able to come up with a match. >> that's because the print didn't have enough points of comparison for the computer to process. with no print match, and now no dna, investigators were no closer to solving this murder.
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