Things get personal for the CSI's Warrick Brown (Gary Dourdan) when he heads to his old neighborhood to investigate a particularly tragic drive-by shooting. The victim, who was sleeping in her own bedroom, was the nine-year-old daughter of Warrick's old friend and mentor, Matt Phelps (Keith David). When the grieving Warrick presses a little too hard in putting the heat on the primary suspect, Grissom (William L. Petersen) is forced to take him off the case. Elsewhere, Nick (George Eads) investigates the murder of the much-despised CEO of a dot com, whose skull was crushed at his job site. ~ Hal Erickson, Rovi