gracie doms in a tiny place called king, north carolina. she took one look at that photograph and recognized him instantly. he was the foul-mouthed customer, she said, who came storming into the store to complain that the pumps were locked. and what time was it? 5:30 a.m., morning of the murder. >> there was actually an altercation between the two of them. so you have a reason why she would remember him as opposed to any other customer that may have just happened entered the store. >> if that attendant was right, investigators may have undercut jason's alibi. still, it wasn't enough. so they plodded ahead, painstaking work. took time. and then years after the murder, they finally got a match for that partial footprint. >> the state bureau of investigation, and the fbi were able to eventually identify that shoe as a hushpuppie shoe. it was a size 12, the same size