days she would have the honor of singing at her graduation at lexington high school. then she would sail off on a cruise with her classmates. >> she was kind of the cement of our family, she held us together. >> then, shari arrived home from a graduation pool party. she stopped at the mail box from 700 feet from her house. her father was watching from his home office as she pulled in. >> five or ten minutes had passed, and all of the sudden i was aware that shari had not come to the house yet. something just told me something was wrong and i ran through the house and into the garage and got in my car and cranked it up and ran to the mail box. >> bob smith found his daughter's door open, the motor running and shari's purse on the seat. >> i saw bare foot prints going to the mail box, but none coming back. >> and he said honey, i don't