was identified, with a mission to solve unsolvable cases. the company ceo david mittelman says the first step in the process is to clean up the dna, which is often degraded. in carla's case, it was more than 40 years old. the company then sequences that dna, looking at thousands of distinctive markers on the genome. in the traditional forensic dna testing framework, like for codas, there's about 20 of these positons in the dna that you're measuring, and that information can be used to confirm that you were at a crime scene or that someone closely related to you — a sibling, parent or child, was at a crime scene. and that's the extent of what you can do with 20 markers. what we do at 0thram is we look at tens of thousands, to hundreds of thousands of markers, and with that information, we can detect more—dista nt relationships. every time you test for dna, you lose a bit of the sample in the process. in carla's case there was little of the killer's dna left. it was likely this was