Eleven years later, mother isn't giving up

Cathy Ann Hammel hasn't been seen or heard from since after being dropped off by a co-worker at her west Houston apartment on March 23, 1998. There have been no new leads in the case but her mother, Catherine Henderson, continues to search for clues.

"This is just an ongoing heartache. This is 11 years I've been coming here," she said.

"Any kind of information you have, the Laura Recovery Center I just started working with this year."

For more information on Cathy Ann Hammel, check the Laura Recovery Center's website.