then came that monday after the super bowl when detective jim nutall started peeking through that oldle and made a remarkable discovery. the dna test that had been conducted on that bite mark back in 2004. once the department realized a woman was involved, why did it take four years until you finally picked it up? what was the department doing in the interim? >> from what it appears, investigators may have followed the initial theory of this crime, that, in fact, it was a burglary. >> reporter: and that there was a woman involved in the burglary? >> that there was a woman involved in the burglary. looking back now in hindsight, it was an opportunity that may have slipped through our hands as an organization. >> reporter: but now nutall took a closer look at the crime scene photos and began to develop his own very different theory. remember, sherri rasmussen was shot at point blank range after a violent struggle and despite the stereo equipment stacked by the front door, very little was actually stolen. >> the suspect made it appear to look like a burglary. they staged it to mislead th