cared for by christopher. >> absolutely. >> sure. >> still, they worried but did not act. even though they knew full well that garrett kopp, the shooter, they were sure, was still hanging around. >> isn't that right, that kopp was still there? >> and we didn't want to tip our hand. >> but should christopher have been a suspect at all? after all, does this sound like the behavior of guilty men? gary kopp and christopher sutton while ripping up bloody carpets actually called detectives to tell them they found new evidence at the crime scene, a bullet casing under the carpet. >> helpful handyman, by the way, i found another casing. come on. >> maybe that's an indication they didn't do it. >> i didn't think so. >> but that's what any good defense attorney would point out. >> sure. >> the casing was underneath something and i don't know how we all missed it but we missed it. we were a little -- christopher