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Grissom gets Dr. Langston's help to find the man who is carrying on the serial killer's work before the next victim is killed. The case will prove to be Grissom's last with the crime lab.


Alec Smight


Anthony E. Zuiker (created by), Carol Mendelsohn | 1 more credit »

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Episode cast overview, first billed only:
William Petersen ... Gil Grissom
Marg Helgenberger ... Catherine Willows
George Eads ... Nick Stokes
Eric Szmanda ... Greg Sanders
Robert David Hall ... Al Robbins
Wallace Langham ... David Hodges
Lauren Lee Smith ... Riley Adams
Paul Guilfoyle ... Jim Brass
Laurence Fishburne ... Raymond Langston
David Berman ... David Phillips
Liz Vassey ... Wendy Simms
Jimmi Simpson ... Tom Donover
Katheryn Winnick ... Maureen Martin
Matt O'Leary ... Dan Forester
Mark Rolston ... Sheriff


Grissom takes his leave from a mostly grateful team and finds his successor by hiring criminology professor Langston, initially as consultant in the serial killer Nate Haskell and copy cat case, their last viz. first. Nate won't cooperate, but analyzing his eye-contact with students helps identify his cahoot and fancy forensics plus victim disposal routes analysis help track down the torture layer he 'inherited' from the original killer. Written by KGF Vissers

Plot Summary | Plot Synopsis


TV-14 | See all certifications »




Release Date:

15 January 2009 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


This is a rare example of a 2 part story that in parallel; is a 2 hour finale story which "finishes" the story arc of 2 main characters, is in effect a back door pilot soft-reboot which introduces a new character, is a follow-up to an earlier story arc, and could actually have been the final episode of CSI if it had been cancelled, as in effect these first 10 episodes of season 9 could be unofficially considered episodes 18-27 of the truncated season 8. See more »


At the end of the episode, The coordinates on Grissom's GPS Device don't point to Costa Rica as displayed, but rather somewhere near Arauca in Colombia, some 1000 miles offset. See more »


Nathan Haskell: Professor Langston, how good to see you. What brings you here?
Dr. Raymond Langston: I came to gloat.
[Sets photos on the table]
Dr. Raymond Langston: Please, come in, Nate... We got these from a videotape of one of your kills. It's hard to believe, isn't it? Now, in all fairness, you did say that only dummies take souvenirs and Gerald Toliver was a pretty dumb guy. Maybe that's why Tom Donover killed him. You know, I've been thinking that maybe, that's the reason Tom Donover decided to follow in your footsteps, and carry on your work...
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