CSI: Crime Scene Investigation (season 4) CSI: Crime Scene Investigation (season 4) The fourth season of "" premiered on CBS on September 25, 2003 and ended May 20, 2004. The series stars William Petersen and Marg Helgenberger. Nick accidentally leaks information to a news reporter ("Assume Nothing"), and Catherine tries to discover how a body ended up in a bathtub ("All for Our Country") during the fourth season of "CSI". Supervised by Grissom and Willows, the Las Vegas CSIs are tasked with investigating the bizarre, the unlikely, and the unprecedented, including a disappearing gun ("Homebodies"), the death of a baby during a heatwave ("Feeling the Heat"),
CSI: Crime Scene Investigation (season 8) CSI: Crime Scene Investigation (season 8) The eighth season of "" premiered on CBS on September 27, 2007 and ended May 15, 2008. The season stars William Petersen and Marg Helgenberger. As the CSIs race to save one of their own ("Dead Doll"), Sara makes a life changing decision ("Goodbye and Good Luck"), and one investigator falls ("For Gedda"), in the eighth season of "CSI". Grissom, Willows and their team investigate a decapitation ("A La Cart"), a demonic possession ("Go to Hell"), the death of a hermaphrodite ("The Case of the Cross-Dressing Carp"), the murder of a slasher actress ("The