Kristin Smart, missing since 1996, will be featured on TV tonight

A television segment about Kristin Smart, the Cal Poly student who went missing 15 years ago, will air tonight.

The show, "Vanished with Beth Holloway," will air on the Lifetime Channel at 8 p.m.

Holloway has been a national advocate for families whose loved ones have gone missing since her daughter, Natalee, disappeared in the summer of 2005 while on a high school graduation trip to Aruba.

Since Smart went missing, there have been multiple leads investigated, several searches conducted and an inundation of community volunteers willing to help over the years.

There's also been an ongoing legal battle with Paul Flores, the last person seen with the then-19-year-old Smart on May 25, 1996. No arrests have been made.

San Luis Obispo County Sheriff Ian Parkinson has pledged to create a cold-case unit, comprised of a current detective and a part-time reserve officer, to look into unsolved homicide cases, including Smart's. Yet without secured funding, it has yet to happen.