but at the most they may have just saw a little kissing. but as far as it like being a full out blown romantic love affair, that is not what it was. it really wasn't. >> carla denied any involvement in avis banks' murder. and was an unlikely suspect but she didn't have an alibi for the time of the murder. investigators believe the murder took place shortly after avis returned home from work. >> avis banks left the daycare about 5:15 and went straight home. she got home about 5:45. no evidence shows that she stopped anywhere in between. and the murder occurred somewhere between 5:45 and 6:00 that night. >> witnesses said keyon was at school running basketball practice at that time. and his cell phone records confirmed he was at the school between 5:30 and 6:00 p.m.