The 1980's case of a little girl is reopened after the murder weapon, an automatic gun, is turned in. It's revealed that she was shot to death while at a playground with her mother at night.
A citywide incentive "guns for shoes" program causes a weapon to turn up that had been used in a 1987 drive-by killing of a little girl in a park. The team attempts to discover who had possessed the gun through the many hands it had since crossed while also investigating who may have been the intended target.—Anonymous