reporter: but, todd had always had a knack for making money and he figured it out, got into the booming wi-fi businessand pretty soon cathy and todd moved into a big lakeside house in georgia with a boat, fancy cars, and of course an airplane. cathy, always so nurturing, told her friends she was ready to take the next step. i remember cathy calling me and telling me that they were living in georgia and that she was excited about it, and that she wanted to have children. so i was excited for her, because i can see her with little kids. reporter: but nine years into what looked like a happy marriage children had yet to arrive. and now we know, because of what was in that blue box they never would. time to find out what happened. who knew the discovery in that box would bring investigators all the way across the county to the blue ridge mountains of north georgia, to a campsite, high on a hill. here was a lonely place. that had kept it s secret long
cathy was excited to move to japan. and she was going to be an english teacher. reporter: and later, after todd left the airforce cathy s friends remember how she was there for him as he tried to figure out what to do next. she was very nurturing in the fact that she was supporting him in whatever different career he was going to choose. reporter: it was a difficult time for todd. we did spend thanksgiving with them one year, and todd had put on a lot of weight. and i know that he wasn t working and he was depressed. reporter: but, todd had always had a knack for making money and he figured it out, got into the booming wi-fi into the booming wi-fi business and pretty soon cathy and todd moved into a big lakeside house in georgia with a boat, fancy cars, and of course an airplane. cathy, always so nurturing, told her friends she was ready to take the next step. i remember cathy calling me and telling me that they were living in georgia and that she