FOUR SEPARATE MURDER INVESTIGATIONS ARE LINKED DURING ONE HECTIC CSI SHIFT, ON "CSI: CRIME SCENE INVESTIGATION," THURSDAY, APRIL 14

"4x4" -- A wild day in Las Vegas has the CSIs simultaneously investigating four fatalities, on CSI: CRIME SCENE INVESTIGATION, Thursday, April 14 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Terrence O'Hara directed the episode from a teleplay by Dustin Lee Abraham and David Rambo and a story by Sarah Goldfinger and Naren Shankar, one of the series executive producers.

Catherine and Warrick look into the death of an auto convention model found murdered in a camper on display, as Nick examines the death of a boy found beaten and burned on a bus bench outside a mini-mall. Across town, the investigation into a car accident leads Grissom to suspect the driver was aiming at his victim, and Greg and Sara discover that toxic mold has eaten away at a body builder from the inside out.

Gil Grissom: William Petersen
Catherine Willows: Marg Helgenberger
Warrick Brown: Gary Dourdan
Nick Stokes: George Eads
Captain Jim Brass: Paul Guilfoyle
Sara Sidle: Jorja Fox
Greg Sanders: Eric Szmanda
Dr. Robbins: Robert David Hall
David Phillips: David Berman
Hodges: Wallace Langham
Jacqui Franco: Romy Rosemont
Detective Cavaliere: Jose Zuniga
Officer Metcalf: Joseph Patrick Kelly
Kyle Shaw: Michael P. Byrne
Wilma Shaw: Patricia Bethune
Lawrence Lafontaine: Chauncy Leopardi
Vernon Miller: Scottie Epstein
Sammy: Raymond Ma
Frank Mejia: Reni Santoni
Judy Tremont: Victoria Reiniger
Steve Dasilva: Robert Cicchini
Detective Vartan: Alex Carter
Lisa Schumacher: Laurie Fetter
Donny Drummer: Neil Hopkins
Suzy Underwood: Cerina Vincent
Candace Underwood: Lauren C. Mayhew
Paul Charles: Jonny Miller
Hazmat Tech: J. Marvin Campbell
Tiffany: Joy Leslie Hadnott
Divine: Debra Wilson
Chester: Clement Blake
Chase Fernandez: Dyllan Christopher
Jackie: Mandy Musgrave
College Boy: Eric Parker
Mrs. Jones: Elizabeth Storm
Andy Jones: Shane Haboucha
Jared Obstfeld: Pat Healy

RATING: To Be Announced