CSI: Crime Scene Investigation (season 7) CSI: Crime Scene Investigation (season 7) The seventh season of "" premiered on CBS on September 21, 2006 and ended May 17, 2007. The series stars William Petersen and Marg Helgenberger. Catherine heads to a small town in Nevada ("Leaving Las Vegas") as Grissom and Sara continue their affair ("Living Doll"), in the seventh season of "CSI". Supervised by Grissom and Willows, the Las Vegas Crime Scene Investigators face both personal and professional challenges as Grissom says goodbye, and new CSI Michael Keppler joins the team ("Sweet Jane"), as they investigate the bizarre, the brutal, and the unprecedented, including a
Pilot (CSI: Crime Scene Investigation) it, then Catherine promises her that she's not going to regret it. Brass discovers that Warrick went behind his back to obtain a warrant and pulls him from his case, leaving Warrick enraged and furious at the news. Brass forces Warrick to shadow Holly. However, Warrick still has to place the bet for Judge Cohen and leaves Holly at the scene alone with a police officer. Unbeknownst to the CSI team, the officer leaves Holly's scene, leaving her to process the scene alone. The suspect returns to the scene and attacks her by pulling out a gun. Meanwhile, Grissom takes