>> but there was no arrest, and that's what kept everybody saying well, then, okay, was it the boyfriend? 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?