by Hal Erickson
synopsis
This final episode of CSI's fourth season involves a casino employee who is beaten and raped while heading home. Surviving the ordeal, the victim gives a positive ID of the assailant -- who is freed after a DNA test "proves" his innocence. As Grissom (William L. Petersen) wrestles with the possibility that the lab results might have been inaccurate, he is forced to deal with another crisis, one that strikes closer to home: fellow CSI operative Sara (Jorja Fox) has been arrested for drunk driving.
