they met as young people, and i think they shared a love of music. that's kind of what got their relationship going and they married a couple of years after that. >> ken and christine lived in palo alto, california, where they raised two sons. christine was a music teacher in the local public school. ken was a real estate consultant. life was going well for the couple until one day in 2000 when ken got a call from christine's school. >> christine had failed to show up for her 1:00 music class. >> and this was very unusual. she was very punctual. she was very much a perfectionist. >> ken had no idea where she was. so he and two co-workers drove to the house to see if she was there. when they arrived, they found