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 City discover that Monica was receiving unwanted attention from both the hotel waiter, Blake who also moonlights in the hotel spa and Pierre, another hotel guest who had shared drinks and made an unwanted play for Monica on the night of her murder. Upon further investigation CSI discover that Blake seemed to be following Monica around even swapping shifts with a colleague at the spa so that he could 'give it his best shot' with Monica and Pierre who had checked out of the hotel in a hurry leaving behind his expensive but smashed watch at the scene of the crime.