Error in Search Results...

I have a project that I developed for a client: http://www.heber-springs.com/membership/members.php which is a membership database that their office staff maintains. Everything seems to be working okay on this w/ one exception and I am not for sure why this is happening.
If you go to: http://www.heber-springs.com/membership/Me...hField=category
You will notice that there is an entry there for a Gem Theatre which is listed under another category. Anyone have any ideas why this is happening? All help is appreciated.