interview for the jurors, hoping they would see what they saw. >> when the police force gave us the case, i watched his videotape statement, finance into it i knew he did it. i news guilty. his demeanor, his attitude, he tried to take over the conversation. not a single tier woodshed. >> they presented evidence that the bullet casing found at the scene, was from a glock 40. the kind of gun nathan owned. >> the only firearm that can generate those marks, it's a glock. >> and, are you able to say that within a reasonable degree of scientific certainty? >> yes. >> but police never did find the murder weapon. >> did you worry that you are able to find the gun, was that a factor? >> yes that was a concern. >> i think anytime in a murder case where you don't have a handgun or the weapon or whatever it was. it's an uphill battle. that's with the jury wants. they want the smoking gun. and we did not have it. >> still, prosecutors thought they had more than enough evidence to prove their case. remember diane parish who said