The fifth season of CSI: Crime Scene Investigation 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 fifth season of CSI.

CSI: Vegas (TV Series 2021–2024) cast and crew credits, including actors, actresses, directors, writers and more.

With George Eads, Eric Szmanda, Robert David Hall, Paul Guilfoyle. Follows a group of Crime Scene Investigators (CSI's) who work with the Las Vegas Police Department (LVPD) to solve crimes by meticulously examining evidence by using advanced scientific methods and technology in Las Vegas, Nevada.

Danson made his main cast debut alongside Elisabeth Harnois at the start of the twelfth season. Series lead Marg Helgenberger departed the main cast in the twelfth episode of season twelve and was replaced by Elisabeth Shue. Season thirteen saw Jon Wellner join the main cast after eight years a guest star. Helgenberger returned for a single ...

The fifth season of CSI: Crime Scene Investigation originally aired on CBS on September 23, 2004 and ended on May 19, 2005. The season consists of 24 episodes. William Petersen as Gil Grissom Marg...