later, computer technology enhanced the print and proved jose castillon was the killer.was an almost perfect specimen. >> i think that if you tried 1,000 times to duplicate that tire impression, you could never do it. the circumstances had to be exact. >> facing a certain death sentence, castillon agreed to plead guilty to capital murder and kidnapping and was sentenced to life in prison without parole. >> it was overwhelming. how many people do you think walk in and want to plead to two consecutive life sentences if they thought they had a chance? >> the nature of the crime indicates he was a serial killer in the making, but the decision to process the crime scene quickly and the technology that helped identify the print provided all the evidence needed to keep him from claiming even more victims. >> i think the fingerprint with the new science and with people willing to experiment to get the science where it's accepted in court was phenomenal. >> that's one of the great things about this technology is that in this case, it made a piece of evidence that was effectively