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Blade hits bone and it stops. and oftentimes the killer s hand continues its movement and slides down the blade and can cut the assailant. the other clue they looked for was shoe prints. with so much blood, both the killer and the victim would have stepped in it. crime scene technician jim varnen found several shoe prints and tried to enhance them with a special dye. amino black works because it stains proteins. and it s applied to protein stain, in this case, a blood stain. in several of the enhanced prints, analysts could clearly see the word justin, a well-known brand of texas-made boots. we knew these footwear impressions in blood that had the pattern of a justin heel was most likely going to be from our assailant because it did not match the only other bleeder at that crime scene, which was our ....
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. ....
Hand continues moving and it slides down the blade and can cut the assailant. the other clue they looked for was shoe prints. with so much blood, both the killer and the victim would have stepped in it. crime scene technician jim varnen found several shoe prints and tried to enhance them with a special dye. amino black works because it stains proteins. and it is applied to protein stain, in this case a blood stain. in several of the enhanced prints, analysts could clearly see the word justin, a well-known brand of texas-made boots. we knew these footwear impressions in blood that had the pattern of a justin heel was most likely going to be from our assailant because it did not match the only other bleeder at that crime scene, which was our victim. ....
That will start anything deteriorating. if this was a fingerprint, lifting it would be difficult. skin is porous and stretches easily, two things that could make it impossible to get a useable print. the odds of getting a bloody print on a body is very slim. the area around the fingerprint was treated with amino black, a chemical that reacts with the proteins in blood. the stain makes a print visible. as in this simulation with a print forming on skin, the amidoblack enhanced the ridge detail of the fingerprint created in blood. any time you have a lot of blood, it will just actually cover up your ridges, so the less blood there is, the better print would be when you do process it with amino black. so, the very small places that had just a tiny bit of blood, ....
I handed it back to him. but enhancing it would come at a price. 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. ....