. >> then investigators identified a fourth suspect, chris harkins was heather's friend who stayed in her apartment when he was in myrtle beach on business. >> after interviewing chris, it was found that they were just friends, that there was no sexual contact or anything like that between them. >> and harkins had an alibi. he was in lexington, south carolina, 160 miles away, the week of heather's murder. then investigators got an unexpected call from an antique dealer 26 miles away in south carolina. he and his wife read about the murder in the newspaper and had some information they thought might help. >> they told us of a gentleman who had come down there. he looked like he had been in some type of a scrap or a fight. and he was trying to sell a camera. >> the cameras was the same make and model as the one missing from heather's apartment. >> just real suspicious acting the whole time. he even got a little aggravated when they told him they didn't want it. and he had a look that scared them. >> he described the man as white, mid-30s with dark hair. and he had the presence of mind t