STOCKTON, CA - The searches started immediately after Cyndi Vanderheiden went missing in 1998.
Her family always suspected Cyndi's friends, Wes Shermantine and Loren Herzog, who were the last two people to see her before she disappeared.
Vanderheiden's father kept her case active in the media and with law enforcement by conducting searches. Shermantine and Herzog were eventually convicted for Cyndi's murder, but her body was never found.
"Fourteen years of doing this. It's quite devastating," Cydi's father John Vanderheiden said. "I wouldn't want it to be done to anybody else."