>> 19-year-old trisha lin reitler was seen at 8:00 on monday night. >> trisha's disappearance rocked the community and devastated her parents. >> 'we'll never know who was responsible what they've taken away from us. >> trisha's mother made a desperate appeal to trisha on the jerry springer show. >> hang in there and know we love you and we're doing everything we can to find you. >> despite huge media coverage and their pleas for answers, none ever came. >> it's like she just vanished into thin air. >> trisha was never found. >> young college students, they need to be aware. crist >> kristen zellar was a junior at iwu when trisha disappeared. >> we were advised to stay in our dorms if you were a girl. >> a week after trisha's disappearance, they needed to go to the marsh grocery store. >> you thought it would be safe and you would be fine? >> exactly. not far at all. i can see the campus. what's going to happen? >> it was getting dark by the time they left the shopping center walking the same route tricia would likely have taken. >> we were maybe halfway up the road when heather turn