>> that's not evidence apparently. so if that's the way that evidence, potential evidence was treated, i'm sure there's not much. >> but even as tom says he tried to dampen the anger that was eating him up, he kept finding what looked like evidence. jennifer's grave itself seemed to be throwing up strange tantalizing clues. >> almost as if she was down there tossing it to us. >> nine years after jennifer's death, her father, jim, was tending her grave clearing away weeds. >> he was edging around the back of the headstone, and he was down here with just a little edger to clear the grass away, and he popped out a fraternity ring. >> had to be a fraternity with those distinctive markings. >> odd that after that long a period of time that someone would come and obviously felt this tremendous remorse or whatever their feelings were