as sophisticated as it is today. >> back then, the dna testing procedures that we used required dna to be what we call high molecular weight, dna that hadn't gone through degradation processes at all. >> but investigators did find some suspicious damage to persitz's car. the car had damage to the front right end. paint was scraped and the bumper was broken. the scratches on the bumper had what appeared to be tiny specs of orange paint which were removed with a small probe. >> we're talking microscopic sized chips of paint. >> the paint sample was compared to the paint from the broken gate using a process called solubility analysis. >> it's a series that may cause it to dissolve or swell, do something, color change. and if they are similar, that means the paints could have had a common source. >> the test showed that the