mr. pittman very well may have fired the fatal shots that killed avis banks. >> and keyon appeared to be unconcerned. >> he was laughing. i had to remind him that he had a fiancee and a baby that were dead. and he said at that point, oh, yeah. >> when keyon called his lawyer, his anger was clearly evident. anger not towards the killer. but the police. >> i don't like this at all. the [ bleep ] think i had something to do with it. i came home. i knew something was up. >> keyon had no criminal record. but he wore size 8 1/2 shoes. consistent with the shoes the killer was wearing when he tried to kick in the back door. and that wasn't all.