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 12) museum ("Maid Men"), a cold-case killing ("Crime After Crime"), the zippering of a body ("Zippered") and a sadistic slaying ("Freaks and Geeks"). Meanwhile, D.B. struggles to keep control of his family ("Brain Doe"), Morgan's helicopter is hijacked mid-flight ("CSI Down"), Doc Robbins' wife finds herself at the center of an investigation ("Genetic Disorder"), and Catherine works alongside the FBI ("Ms. Willows Regrets"), before making a life-changing decision ("Willows in the Wind"). Then, it's all change at the LVPD when Russell recruits Julie Finlay ("Seeing Red"), fresh out of anger management and ready to tackle cases such as the theft of