arizona. so many questions remain about what drove the shooter to gun down a congresswoman and 18 other people. there's no disputing what the man accused of the crime did leading up to the attack. cnn's randi kaye has compiled a timeline. >> reporter: the night before the shooting, 11:35 p.m. friday, investigators tracking jared loughner's last steps says he drops off a roll of 35 millimeter film to be developed at walgreens. less than an hour later, 12:29 a.m. saturday, loughner checks into this motel 6, shows an id and pays by credit card, activity on his electronic room key shows he went in and out of the room several times during the night. 2:19 a.m., loughner returns to walgreens to pick up his developed photos. 2:34 a.m., loughner makes a purchase at this chevron station's convenience store, buys a donut, soft drink and energy bars and the security