is it a word or a person or a thing? the clues pointed in so many different direction that is it really was a total mystery. there is a concept in the law known as a dying declaration. with those three letters scrawled in her own blood lead to the apprehension of her killer? when we come back, investigators dig into that three-letter mystery. you have this scrawled in message saying this is my killer. absolutely. who or who was roc? when written in blood continues. let s be honest:
when are the letters were written, it skimmed over it and didn t disrupt it. here was the central observation. the specks of blood were not speared, roc was written after they dried. how long after? i have a machine i use to make spatter. in her lab, she used animal blood to see how long it took to dry on a similar surface. i applied it to sections of cardboard i started writing the word roc. i must written this over different areas of spatter. it took at least 20 minutes of drying time before the specialist could write without smearing the spatter. she concluded there must have been about that much time between the attack on karen and the word roc being written on the wall. next she looked for fingerprints
gruesome canvas for the letters roc then written over it. when the letters were wren on top it, it just skimmed right over it and didn t disrupt it at all. since the specks of blood weren t smeared that must have meant roc must be have been written after they dried. but how long after? in her lab she used animal blood to test how long it took for spatter to dry on a similar surface. so once i came back and was able to apply spatter to some secks of some cardboard, then i was able to get some blood and start writing the word roc. i must have wren this word a million times over different areas of spatter. in the lab it took at least 20 minutes of drying time before the forensic specialist could write without smearing the spatter. she concluded there must have been about that much time between the attack on karen and the word roc being written on
she concluded there must have been about that much time between the attack on karen and the word roc being written on the wall. next, she looked for fingerprints in the letters, themselves, sounds impossible, right? if she s writing and applying pressure to the wall, you would think there would be some type of transfer of ridge detail. ridge detail. we all have it. unique tell-tell patterns on every human finger and hand. but anna wasn t finding that here. rather she detected an unusual hint of a pattern. something almost like polka dots. i thought to myself the garden glove on the counter was missing its match, missing its pair. reporter: a garden glove was found the meat was never located. it had a distinctive dot pattern. on the interior side where the palmetto and the fingers were, it s like that rubber and it s got those little.
the word roc being written on the wall. next she looked for fingerprints in the letters themselves. sounds impossible, right? if she s writing and applying pressure to the wall you d think there would be some type of transfer of ridge detail. ridge detail, we all have it. unique tell-tell patterns on every human finger and hand but anna wasn t finding that here. rather she detected an unusual pattern, something like polka dots. i thought to myself the garden glove on the counter missing it s match. missing it s pair. a garden glove was found in the kitchen and the mate was never located. it has a dot pattern. it s like rubber and it has those little nubby things that stick up for gripping purposes