In the gripping season finale, the team's latest investigation centres around one of their own as a shooting leaves Mac's life hanging in the balance. As he fights for survival, can his collegues find and bring the gunman to justice?
A skeleton found on a bus turns out to be that of a teenager who died ten years ago. The CSI team find their evidence leads them further from the truth.
The CSIs are called to a Brooklyn housing project to investigate the murder of a successful businessman who still felt the pull of his old neighborhood.
A wave of brutality threatens a small New York City community following the discovery of a dismembered body.