. >> carrie and her boyfriend of two years, vince doan, had a tumultuous relationship. >> i thought maybehad been held captive by vince because he had done that one other time. he tied her up in this barn several months before. >> when we were first informed, we obviously did not believe we had any kind of a case at all of of any nature. >> bill peel is the hamilton county prosecutor who investigated carrie's disappearance. >> but certainly, a person in an automobile in blanchester, ohio, doesn't disappear very frequently. >> the police launched a formal investigation. >> carrie was very outgoing, very active, friendly. she was beautiful. she was just a happy person, fun to be around. >> vince and carrie began dating several years after they graduated from blanchester high school. in the months before her disappearance, she had told friends it was time to break ties with vince. she considered moving away, and the day before she disappeared she took a placement test for nursing school in north carolina. >> we determined that it was likely that we only had one true suspect. >> vince doan. h