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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)


Special Guest Stars
David BermanDavid Berman
As David Phillips
Laurence FishburneLaurence Fishburne
As Dr. Raymond Langston
Liz VasseyLiz Vassey
As Wendy Simms

Guest Stars
Bill IrwinBill Irwin
As Nate Haskell
Brad CarterBrad Carter
As Gerald Tolliver
Jimmi SimpsonJimmi Simpson
As Thomas Donover
Jon WellnerJon Wellner
As Henry Andrews
Joseph Patrick KellyJoseph Patrick Kelly
As Officer Metcalf
Josh JacobsonJosh Jacobson
As Joel Steiner
Larry Mitchell (1)Larry Mitchell (1)
As Officer Mitchell
Larry SullivanLarry Sullivan
As Officer Akers
Marc VannMarc Vann
As Conrad Ecklie
Matt OMatt O'Leary
As Dan Forester
Mimi MichaelsMimi Michaels
As Tiffany Cohen
Sheeri RappaportSheeri Rappaport
As Mandy Webster
Katheryn WinnickKatheryn Winnick
As Maureen Martin
Stephen SneddenStephen Snedden
As Steven Dougherty
Wynn EverettWynn Everett
As Hallie Donover

Co-Guest Stars
Mark RolstonMark Rolston
As Sheriff

Jorja FoxJorja Fox
As Sara Sidle
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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