A kidnap victim from New York who went missing six years ago may be the same boy whose death the CSI team (William Petersen, left, with Marg Helgenberger) is investigating in Las Vegas, on CSI: Crime Scene Investigation. Anthony LaPaglia guest stars in this first part of a two-part crossover episode which concludes on "Without A Trace,"CBS/Monty Brinton - Wednesday, December, 26, 2007, 9:26 PM

The cast of CSI: Criminal Scene Investigation on CBS. CBS/Ron P. Jaffe - Tuesday, December, 12, 2006, 8:12 PM

William Petersen stars as Gil Grissom in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Eric Szmanda stars as Greg Sanders in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Marg Helgenberger stars as Catherine Willows in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Paul Guilfoyle stars as Capt. Jim Brass in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Robert David Hall stars as Dr. Al Robbins in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Jorja Fox stars as Sara Sidle in the CBS series CSI: Crime Scene Investigation .CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

George Eads stars as Nick Stokes in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Gary Dourdan stars as Warrick Brown in the CBS series CSI: Crime Scene Investigation.CBS/Andrew MacPherson - Tuesday, September, 19, 2006, 10:19 PM

Jorja Fox as Sara Sidle CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Jorja Fox as Sara Sidle CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

George Eads as Nick Stokes CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

George Eads as Nick Stokes CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

William Petersen as Gil Grissom CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

William Petersen as Gil Grissom CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

William Petersen as Gil Grissom CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

William Petersen as Gil Grissom CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

William Petersen as Gil Grissom CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Jorja Fox as Sara Sidle CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Marg Helgenberger as Catherine Willows CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Marg Helgenberger as Catherine Willows CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Marg Helgenberger as Catherine Willows CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM

Marg Helgenberger as Catherine Willows CBS' "CSI: Crime Scene Investigation"Tuesday, September, 19, 2006, 10:19 PM