see blood and debris left by the ambulance crew. what was your first idea of what appeared to have happened here? >> you know, when i first walked up, i went with what appeared to be the obvious. that someone had simply walked from the side of the house, fired the shot, and then exited back toward the rear of the house. so this is almost like an alley here. so it would provide concealment. >> take advantage of surprise. >> yeah. if someone was gonna take a shot, that made the most sense. >> believing the shot came from a handgun, police looked for shell casings. and yet for all they looked, there were none, nor any other evidence. still, detective evans figured there was a party that night, so there were bound to be people who saw something. >> my thought was, as soon as i get 'em to headquarters and get 'em separated, someone's gonna tell me what happened." >> did they talk? >> everyone talked. but with each and every person that i talked to, they didn't see anything. >> 80 miles away, at 5:00 a.m,