CSI: Crime Scene Investigation (season 5) of a bear ("Unbearable"), and a murder involving sports betting ("Big Middle"). The risk of losing of one of their own, however, allows Ecklie and Grisson to set aside their differences, both personal and professional, and reunite the team once again ("Grave Danger"). <onlyinclude></onlyinclude> CSI: Crime Scene Investigation (season 5) The fifth season of "" premiered on CBS on September 23, 2004 and ended May 19, 2005. The series stars William Petersen and Marg Helgenberger. Greg begins his journey from a lab rat to a field mouse, as the Las Vegas Crime Lab faces a personnel overhaul ("Ch-Ch-Changes"), during the
CSI: Crime Scene Investigation (season 12) first and only episode of the "CSI" franchise episode not to feature a female lead. <onlyinclude></onlyinclude> CSI: Crime Scene Investigation (season 12) The twelfth season of "" premiered on CBS on September 21, 2011, and ended on May 9, 2012. The series stars Marg Helgenberger, Ted Danson and Elisabeth Shue. The show was moved to Wednesdays at 10:00 p.m. (P/E), following "Criminal Minds". Catherine and Nick adjust to life working under D.B. Russell, following their demotions, while Morgan Brody joins the CSI team ("73 Seconds"), in the twelfth season of "CSI". This season, the team investigate crimes including the murder