INDIANAPOLIS - The parents of missing Indiana University student Lauren Spierer will take their plea for information about their daughter's disappearance to a national audience on "Katie" next week.
Robert and Charlene Spierer taped segment for Katie Couric's daytime talkshow earlier this month, and the episode will air Monday at 3 p.m. on RTV6.
The episode features "America's Most Wanted" host John Walsh and other families with missing children.
"There are at least 85,000 active missing persons cases in this country and 37,000 of them are children under the age of 18," the episode description reads. "On this episode of 'Katie,' we are talking about people who have vanished -- disappeared without a trace -- and the families who are desperately looking for any clue that will bring them home safely."
Spierer's parents posted another letter Wednesday on the family's Facebook page, pleading for information about their daughter, who was last seen walking toward her Bloomington apartment the morning of June 3, 2011, after a night out with friends.
"Imagine learning one of the most important people in your world has disappeared and there is not enough information available from friends and acquaintances to find them," they wrote. "There is no reason to think the people Lauren was last with wouldn't do everything in their power to help us find her. But, alas, there is deafening silence."
The couple said the silence compounds their frustration and desperation, but pledged never to give up hope that their daughter will be found.
"We will never give up. Just as someone in your life is special to you, be it child, friend or family member, Lauren is special to us," they wrote.
Anyone with information about Spierer's case is asked to call the Bloomington Police Department Tipline at 812-339-4477 or the family's private detective firm, Beau Dietl & Associates, at 800-777-9366.