ms. birgfeld's scent was followed. that very well could have been the location where she was killed and then placed in the back seat of the car where she >> then the dogs were given lester ralph jones's scent. and they followed the same path exactly. a big break in the case like that was very hard to keep secret. >> at one point, i was told they had enough information that they would be able to convict ralph. >> but no arrest. and so summer slipped to fall. the volunteer search finally petered out. command post was closed. paige's parents rented an apartment in town so they could carry on the search alone. >> this is my life now. and i really wish i could get in a different line of work. >> even offered a $15,000 reward. no questions asked. >> it's about 100 days, and if she's out there, we need to find her. and if this will help stimulate that, so be it. tips. nonetheless, frank stayed on in grand junction for a whole fruitless year, searching. >> at some point you have to say, do i want to stay here doing this, or is

ms. birgfeld sat in the seat in the position it was and was unable to touch the pedals. mr. jones was about 6'5". >> and jones had spent three years in prison for kidnapping and sexually assaulting an ex-wife. who told investigators he took her out to the desert against her will and threatened to kill her. a scenario strikingly similar to how cops believed paige was murdered. oh, and one more thing. one of the last calls paige made the night she disappeared was to a disposable-type tracfone. >> this tracfone made only five phone calls in its entire existence. and all five of those phone calls, four of them were made to ms. birgfeld, and one of them was made from her back. >> the phone's number wasn't registered to any specific person, making it difficult to trace. difficult but not impossible. >> we were able to identify, through records of tracfone, the precise store, time and register that that tracfone was purchased. >> which was at this walmart in grand junction where the store security cameras picked up a man believed to be mr. jones purchasing that tracfone. >> we also