CSI: Crime Scene Investigation season 4

The fourth season of CSI: Crime Scene Investigation premiered on CBS on September 25, 2003, and ended May 20, 2004. The series stars William Petersen and Marg Helgenberger.

Plot
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"), a case of raccoon versus big rig ("Fur and Loathing"), a car-bombing ("Grissom Versus the Volcano"), and the derailment of a roller-coaster ("Turn of the Screws"). Meanwhile, Catherine usurps a case from Nick and Sara ("After the Show"), the team have to re-investigate a rape-murder ("Invisible Evidence"), Grissom heads to Jackpot, Nevada ("Jackpot"), and team take part in a CSI relay, bringing together investigative teams from across America ("Dead Ringer").

Main cast

 * William Petersen as Gil Grissom, a CSI Level 3 Supervisor
 * Marg Helgenberger as Catherine Willows, a CSI Level 3 Assistant Supervisor
 * Gary Dourdan as Warrick Brown, a CSI Level 3
 * George Eads as Nick Stokes, a CSI Level 3
 * Jorja Fox as Sara Sidle, a CSI Level 3
 * Eric Szmanda as Greg Sanders, a DNA Technician
 * Robert David Hall as Al Robbins, the Chief Medical Examiner
 * Paul Guilfoyle as Jim Brass, a Homicide Detective Captain

Recurring cast

 * Wallace Langham as David Hodges
 * David Berman as David Phillips
 * Archie Kao as Archie Johnson