and at what turned out to be the stock farmhouse, in they went. >> greg was like, follow me real quick. so i followed him and we went upstairs and when i turned around, greg had turned on a light in the room. and i seen this guy laying in the bed. and i said, come on, let's go, let's do something. because there was people there. >> reporter: what was the feeling you had as you said that? >> like panic. it was like craziness like god, what if they wake up. you know? >> reporter: but. >> he just turned and went into that room. the guy had rolled out of bed and they were wrestling with the gun. and i just was like startled and my gun went off. and i have no idea where that shot went. >> reporter: sources close to the investigation, though, tell "dateline" there's reason to believe that whether jessica knows it or not, her wild shot may have been the fatal one. that it may have struck wayne stock in the head with evidence of the blast obliterated by