The First 48 S04E16 - Houdini / Innocent Lost

A gas station clerk falls victim to an armed robbery and is shot, before he dies he hit's the alarms. All exits are sealed locking the killer inside, however when police arrive the killer is no where to be found. Two men open fire on each other outside a young girls home, she is caught in the crossfire and dies. With only witnesses from the community they are forced to rely on them to lead them to the shooters.