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Grissom gets help from Dr. Raymond Langston, a criminal pathologist, as they work on solving a murder and kidnapping case. the crimes maybe linked to an imprisoned serial killer who attended a class which Langston taught and Grissom monitored. Grissom offers Langston a job on the team as he prepares to leave CSI for good.

Episode Info

Episode number: 9x10
Airdate: Thursday January 15th, 2009

Alternate Airdates:

UK (Channel 5) Mar 17, 2009
NL (RTL 4) Apr 27, 2009

  • Currently 8.3/10
8.3/10 (22 Votes cast)


Guest Stars
Bill Irwin
As Nate Haskell
Brad Carter
As Gerald Tolliver
Jimmi Simpson
As Thomas Donover
Jon Wellner
As Henry Andrews
Joseph Patrick Kelly
As Officer Metcalf
Josh Jacobson
As Joel Steiner
Larry Mitchell (1)
As Officer Mitchell
Larry Sullivan
As Officer Akers
Laurence Fishburne
As Dr. Raymond Langston
Matt O'Leary
As Dan Forester
Mimi Michaels
As Tiffany Cohen
Sheeri Rappaport
As Mandy Webster
Katheryn Winnick
As Maureen Martin
Stephen Snedden
As Steven Dougherty
Wynn Everett
As Hallie Donover

Co-Guest Stars
Mark Rolston
As Sheriff
Main Cast
George Eads
As Nick Stokes
Eric Szmanda
As Gregory "Greg" Sanders
Robert David Hall
As Dr. Albert "Al" Robbins
Wallace Langham
As David Hodges
David Berman
As Dr. David Phillips
Marg Helgenberger
As Catherine Willows
Lauren Lee Smith
As Riley Adams
William Petersen
As Gil Grissom
Paul Guilfoyle (1)
As Captain Jim Brass
Cultural References
Title: One to Go

The term 'X down, Y to go' refers to a sequential list of actions, or a set upon which a number of actions is to be performed, usually performed on the same type of object. In this case, it refers to murder victims of a serial killer. The grisly meaning is that 19 have been murdered, and one remains to be murdered.

Other Episode Crew

CreatorAnthony E. Zuiker
Main Title ThemeThe Who
Warning: CSI: Crime Scene Investigation season 9 episode 10 guide may contain spoilers
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