the pathologist would be definitive in his conclusions. >> the industries noted to betty schirmer aret, with no airbags deployed in which mr. schirmer had absolutely no injuries at all. >> doctor ross said there were two wins on the right side of but he said that could not have been caused in that car accident. and, an opinion that became even stronger when he examined these computerized 3d models of betty skull. >> these two images here are huge. >> doctor ross was convinced betty had been murdered and brutally so. >> she got fractures on the right side of the skull. and, directly underneath that, she has swelling and bleeding to her brain. that's a lot of force going through there. >> and, what kind of murder weapon would the killer have used? >> doctor ross had an idea. >> it was my opinion that she had been struck, multiple times on their head with a long cylindrical object with a lot of weight to it, a crowbar, something. and he was suing for the fences, essentially and hitter hard. at least twice. in this area. and caused that damage. >> and, the real stone, or for the put david