GRISSOM WORKS WITH A CSI FROM THE DAYSHIFT ON THE MURDER AND KIDNAPPING CASE OF TWO HIGH SCHOOL CLASSMATES, ON "CSI: CRIME SCENE INVESTIGATION," THURSDAY, NOV. 11

Louise Lombard ("Hidalgo"), Xander Berkley ("24") and Jon Tenney ("Brooklyn South") Guest Star

"Formalities" -- Grissom works with a new CSI from the dayshift on an apparent kidnapping from a high school formal held at a Vegas casino, on CSI: CRIME SCENE INVESTIGATION, Thursday, Nov. 11 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Bill Eagles directed the episode written by Dustin Lee Abrahams & Naren Shankar, one of the series' executive producers.

Louise Lombard ("Hidalgo") guest stars as a dayshift CSI working with Grissom. Xander Berkely ("24") returns as Sheriff Atwater and Jon Tenney ("Brooklyn South") guest stars as the father of kidnapping victim.

Grissom abruptly leaves a dinner honoring Conrad Ecklie's (Marc Vann) appointment to new Assistant Director of the Crime Lab after he gets an urgent page to rush across the street to a hotel suite where a high school student was found dead. Dayshift CSI Sofia Curtis (Lombard) assists Grissom with the case. The autopsy reveals that the victim died of suffocation after one of her classmates was kidnapped from the party. The CSI team now races to find the kidnapped victim before she is found dead, too.

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
Sheriff Rory Atwater: Xander Berkely
Officer Metcalf: Joseph Patrick Kelly
Sofia Curtis: Louise Lombard
Charlie Macklin: Jon Tenney
Bobby Jensen: Jonathan Banks
Nikki Jensen: Danica Stewart
Janelle Macklin: Kate Mara
Polygraphist: Kevin Cooney
Rachel Macklin: Nicole Lenz
Officer G. Levitt: Ty Upshaw
Conrad Ecklie: Marc Vann
Officer Akers: Larry Sullivan

RATING: To Be Announced