Time to Crime (S02E13)

The 1987 drive-by shooting death of a little girl, the innocent victim of what was assumed to be a gang retaliation attack, is reopened after the murder weapon suddenly turns up as part of the city's gun recovery program. In pursuing the investigation, Rush and the team discover the gun has had multiple owners, all of whom were affected in some way by its possession. Meanwhile, Valens tries to end his relationship with Rush's sister, Christina (Nicki Aycox), before Rush discovers the truth. (Warner Bros. UK)