over the mountains, in denver, four hours away, frank birgfeld was driving to his office. phone rang. >> voice on the phone says, this is somebody with the mesa county sheriff's office. and he said, are you paige's dad? and i said, yep. and he said, did you know she's missing? >> reporter: barbra campbell got the call from her husband, hans, who told her. >> paige is missing. what do you mean she's missing? >> reporter: andrea land got the news in an e-mail. >> it said paige is missing in the subject line. i knew something horrible had to have happened because it didn't make any sense that she would be missing. >> reporter: no way for even a best friend to prepare for such a thing. nor any way to understand just how much of it was going to be a mystery. how much they did not, could not know about the life and disappearance of paige birgfeld. or what they'd be called on to do to bring her home. >> stunningly beautiful. one of those women that was almost a little bit intimidating at first if you were, you know, your more average mom. >> reporter: andrea land and the other yo