RUSSELL HELPS HIS FRIEND MAC TAYLOR WHEN THEY DISCOVER MAC'S GIRLFRIEND IS MISSING IN LAS VEGAS, ON PART ONE OF A TWO-PART CROSSOVER WITH "CSI: NY," ON "CSI: CRIME SCENE INVESTIGATION," WEDNESDAY, FEB. 6

Editor's note: This storyline reflects a change in the Feb. 6 episode of CSI: Crime Scene Investigation: RUSSELL HELPS HIS FRIEND MAC TAYLOR WHEN THEY DISCOVER MAC'S GIRLFRIEND IS MISSING.

Gary Sinise ("CSI: NY") Guest Stars as Mac Taylor

"In Vino Veritas" - When CSI Mac Taylor decides to surprise his girlfriend in Vegas, he discovers she's missing and asks his friend D.B. Russell for help. Meanwhile, the CSIs investigate the loss of a local wine collector on part one of a two-part crossover with CSI:NY, on CSI: CRIME SCENE INVESTIGATION, Wednesday, Feb. 6 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Gary Sinise ("CSI: NY") guest stars as Mac Taylor.

SERIES REGULARS:

Ted Danson (D.B. Russell)
Elisabeth Shue (Julie Finlay)
George Eads (Nick Stokes)
Paul Guilfoyle (Captain Jim Brass)
Jorja Fox (Sara Sidle)
Eric Szmanda (Greg Sanders)
Robert David Hall (Dr. Robbins)
David Berman (David Phillips)
Wallace Langham (David Hodges)
Elisabeth Harnois (Morgan Brody)
Jon Wellner (Henry Andrews)

GUEST CAST:

Gary Sinise (Mac Taylor)
Larry Mitchell (Officer Mitchell)
Damian O'Hare (Jonah Drake)
Nicole Steinwedell (Samantha Wilson)
Edward Herrmann (Albert Vogel)
Jeff Branson (Jack Davari)
C.S. Lee (Vincent Carrado)
Nicholas Bishop (Tom Scola)
Christopher Heyerdahl (Marc Ratelle)
Kirk Acevedo (James Boyd)
Donnell Turner (Bouncer)

WRITTEN BY: Rick Eid

DIRECTED BY: Louis Milito

RATING: To Be Announced