luis caballero's response was he never has been in her car or never detailed her car. >> but analysts found caballero's prints inside denise's car. when faced with his evidence, caballero changed his story. he now claimed he was an unwitting accomplice. he said the real killer was his friend, 19-year-old isaac brown. brown, who had no criminal record also confessed but said the killer was caballero, who was broke and desperate for money. brown said caballero had been planning to rob denise for months. >> there was just loose talk from caballero saying that man, i need to come up. i need to hit somebody. i need some money right now. and only person i could think of that has got some money right now is right there. and he would always point across the hallway. >> everybody and their brother was trying to make a deal with the devil. in other words, every bad guy in this case was wanting to confess and plead out but get the best deal they could. >> brown's prints were found on a soda bottle in denise's car. proof he was involved. despite brown and caballero's conflicting versions of what