CSI Crime Scene Investigation

Catherine and Keppler begin to investigate the murder of a teen-aged "Jane Doe." Both agree that the killer, who was meticulous in removing evidence from the body and surrounding area, is likely a repeat offender.

A frantic 911 call sends the CSIs into a vacant penthouse; however, instead of finding the caller, they unearth a nearly 100-year-old corpse and find themselves navigating their way through a booby-trapped house.

A reformed drug addict with everything to live for is found dead in an alley. The CSI's discover he was the victim of a premeditated plot.