was it, you know, someone that's still out there? is he going to strike again? >> it was scary, of course, and students like kristen lancaster followed the investigation. did people change their behavior patterns because of this crime? >> to a certain degree, but i think it was short lived. i mean, people went back to their classes and their business. you start rationalizing, maybe she trusted the wrong person. >> this doesn't happen to you. >> exactly, yeah. >> and then, it was late october, half a year since the murder of jamie hart. kristen didn't know it yet, but she was about to become part of a chain of events that only deepened the mystery. >> i think maybe i went to classes that day. i'm not exactly sure. i know that the evening time rolled around. i think, was it a friday? >> a friend invited kristen to a party. >> she said well, you know, i'm having a little get-together at my house. why don't you come by? >> kristen drove over to the apartment complex in bryan, texas. that's the town next to college station.