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
CSI: Crime Scene Investigation (season 14) 9, 2014. On March 13, 2014 it was announced that "CSI: Crime Scene Investigation" would return for a fifteenth season, which started airing in September 2014. D.B. and Finn lead the hunt for Morgan, while Brody makes a shocking discovery that endangers her own life ("The Devil and D.B. Russell"), in the fourteenth season of "CSI". Also this season the team investigate the unusual, the brutal, and the life-changing, including a casino heist ("Take the Money and Run"), a night-club fire ("Torch Song"), a contact lens discovered on a cookery show ("Last Supper"), a cold case that takes the team,