elisa wondered why that evidence had never been introduced at trial. >> i went to the evidence room and i see that the pants were checked out by one of the d.a.'s and not returned. i'm like, hello? if they were so sure that john thompson was the carjacker, you would have tested his blood and gone tada, waived your crime lab report around the courtroom. that would have been your nail. i knew that something was going on that was very unscrupulous and was deliberate. deliberate. >> the defense was never told that the blood had been tested. so that revealed quite a bit about the prosecutors that had been handling thompson's case. >> my next move is to go to the crime lab. and act keen of blasse. you can't tip off people who work for the police department you are on to something naughty. i just go in and go, i need to see this old report, please. i then get the crime lab report which tells me that the blood type is blood b. >> we were incredibly excited because we know now the