laura's ex-boyfriend, robert mcswain. >> she loved him. she was head over heels in love with him. just smitten. he could do no wrong. you know, and it was an on again/off again relationship. >> friends said laura hoped to marry robert, but he wasn't interested. mcswain's friend said he went directly home from the bar on the night of the murder, and family members backed up his alibi. >> he stayed at the house the rest of the night, never left. his mother and sister were also there at that time. >> police now were at a dead end. no one else at the bar that night matched the general description of the man presumed to be the killer. >> it was a hurt that there was just no closure to it. because we just kept thinking someone's out there and we just don't know who it is. and not only that, but it was the hurt of losing her and giving her up, when she was such a worthwhile person and she was so good to everybody. and we just couldn't see any sense in it. >> months passed, then years, and laura's family lost hope that her killer would ever be brought to justice. ♪ ♪ nothing says, "you're