CSI: Crime Scene Investigation: Season 9, Episode 10

One to Go (15 Jan. 2009)

TV Episode  |  TV-14  |   |  Crime, Drama, Mystery
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Ratings: 8.8/10 from 574 users  
Reviews: 1 user | 2 critic

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.



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Episode cast overview, first billed only:
Maureen Martin


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

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Release Date:

15 January 2009 (USA)  »

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Did You Know?


William Petersen's final appearance as a regular cast member. 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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User Reviews

Bookends--beginning and ending
16 January 2009 | by (Florida) – See all my reviews

A good introduction of Dr. Langston as we lose Gil Grissom, the brain of this excellent series. This episode is a complicated story, following the first part of it and bringing to close murders that happened earlier in the season as well as a serial killer from a decade ago. The real heart of the story is Grissom's leaving. Every main character gets to have a personal conversation with Gil--or as personal as Grissom ever lets anyone get. Even snarly Hodges comes across as sad to see Grissom leave. The conversation between Grissom and Nick speaks volumes to the relationship between the two. Grissom has been depressed and lonely all season, especially after the departure of his one and only woman, Sara. We have not seen Grissom dwell on the absence of Warrick, but that death probably plays a big role in Grissom's decision, but ultimately, its Sara he leaves for. In the beginning of CSI, we saw Grissom (2nd episode) taking photos of flying dummies as Sara walks up behind him, he says her name before he turns around. The ending of this episode is the matching bookend to that first episode. The alpha and omega, the beginning and ending--perfectly written for these two lovers, who made geek-love a possibility! There are no words spoken between the two--no need for words as the camera pans around the couple and fades into the lush green jungle. This ending really illustrates the writing capabilities of Carol Mendelsohn--she did good! Here's hoping the best for Billy Petersen and Jorja Fox--I hope to see them again.

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