gym vance is off tonight. erica smith was killed 12 years ago. her body was found in a shallow grave not far from her family's home. investigators now say they know who killed her, but they're not releasing his name because he committed suicide. her parents said the daughter's killer had no connection to the family. the fully decorated christmas tree is a reminder of the unbreakable nature of parents' love for their children. it's the tree she never saw in december of 2002. the unspeakable crime has remained unsolved for as many years as the tree has stood there. justice for erica was never out of her parents' mind. >> i made it a point in my heart that i had to be strong for her. >> two years ago, erica smith's murder was reopened. today they revealed the likely suspect committed suicide during the investigation. >> very frustrating outcome. when i look at the amount of effort we put into this across the board, at this point, i can't think of any stone we left unturned. >> william smith says he did not know the suspected killer who apparently fr