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The suspect in a murder investigation leads the CSI crew on a chase through one of Las Vegas's busiest casinos. After taking a hostage, the man locks himself in a guest room, and the CSIs have to rush to uncover if the man worked alone or not. When their time begins to wind down, one of the CSIs decides to risk their life to negotiate the safe return of the hostage.
The telephone number of the cab company is identified as 111-1111. Given the way telephone numbers in the US are allocated, this is not a legitimate phone number, since the exchanges (the first 3 digits) never start with the digit '1' or digit '0', for historical technical reasons.
Warrick: What are you thinkin'?
Grissom: That you married people take things too personally.
(about Grissom's refridgerator in his office)
Wendy: You got anything else in there? Bottle of tequila? Severed human head?
Grissom: I don't keep tequila.
Sara: And grass, not the kind you smoke on the floor in the closet. But all the shoes in the closet were clean.
Warrick: So someone was walking around in here with grass on their shoes? Maybe it was the missing husband ... or a desperate gardener.
Sara: Who was mowing more than the lawn.
Doc Robbins: Gil ... have you ever been even close to getting married?
Grissom: Once ... when I was younger. Her name was Nicole Daley. I asked her to marry me. We were classmates. She liked bugs too. I gave her my grandmother's ring, but my mother made me get it back. Second grade.