Pilot (S01E01)

In the premiere, Grissom and Brass track down a serial killer who stages his murders so that they appear to be suicides. Meanwhile, Willows and Brown investigate a robbery/homicide. And Stokes, working his 100th case, gets involved with a businessman who has been taken advantage of by a prostitute. Throughout the shift, all the team members take turns training Gribbs, new to the team and fresh out of the Police Academy. While being left unattended at the site of a burglary, however, the inexperienced Gribbs is shot when the suspect unexpectedly returns to the scene. (USA Network)