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Season 4

4x1: Assume Nothing (1)
Two couples meet in a bar and one of the couples is murdered. When a second couple is murdered in a similar fashion the team suspects a pair of serial killers are on the loose.... read more »
Air date September 25th, 2003
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4x2: All For Our Country (2)
When the lead suspects in Grissom's serial killer case are murdered, Grissom suspects an inside job. Grissom and Brass are at odds when Grissom suggests it was a cop. Catherine... read more »
Air date October 2nd, 2003
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4x3: Homebodies
Grissom and Warrick get the case of an old woman found mummified in her closet. Sarah and Nick arrive to investigate a breaking and entering to find a raped teen. These cases... read more »
Air date October 9th, 2003
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4x4: Feeling The Heat
During Vegas's latest Heat wave of triple digit temperatures, Gil and Catherine investigate a baby locked in a car. Warrick investigates a man dead of an apparent heat stroke in... read more »
Air date October 23rd, 2003
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4x5: Fur And Loathing
The team is introduced to the ""Furry"" side of Vegas when a man is found dead on the side of the road, dressed in a racoon suit. Elsewhere in Vegas, a... read more »
Air date October 30th, 2003
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4x6: Jackpot
A severed head is shipped to Dr. Robbins from Jackpot, Nevada. Grissom goes to Jackpot to find the rest of the body and gets very little cooperation from the locals. Catherine... read more »
Air date November 6th, 2003
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4x7: Invisible Evidence
Warrick's appearance at the preliminary hearing on a rape and murder case goes terribly wrong when the only piece of evidence is thrown out on a technicality. Grissom and the... read more »
Air date November 13th, 2003
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4x8: After The Show
A suspect's infatuation with Catherine results in her taking over a high profile case. The case is a missing woman who aspired to be a showgirl. Sara and Nick are angered since... read more »
Air date November 20th, 2003
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4x9: Grissom Versus the Volcano
The sheriff is under political pressure to find who killed a air marshall with a car bomb that the sheriff witnessed. Grissom, Catherine and Nick are pressured to produce... read more »
Air date December 11th, 2003
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4x10: Coming Of Rage
A teenager is found murdered on a construction site. Grissom, Sarah, and Warrick follow the lead of blood on a hammer. Nick, with an assist from Catherine, tries to find how a... read more »
Air date December 18th, 2003
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4x11: Eleven Angry Jurors
The lone holdout on a jury is found dead in the jury room. The eleven jurors who were voting guilty and who hated the dead juror are the natural suspects. Nick reopens a four... read more »
Air date January 8th, 2004
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4x12: Butterflied
A woman found murdered in her home. Her resemblance to Sara causes Grissom to take a personal interest in the case and forces him to examine the decisions he has made in his life.
Air date January 15th, 2004
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4x13: Suckers
Three little CSIs (Grissom, Sara, and Nick)respond to an electrocution at a casino. The casino is hosting Japanese antiquities. The electroctution is just a ruse to steal the... read more »
Air date February 5th, 2004
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4x14: Paper Or Plastic
A robbery at a grocery store results in a shootout leaving five dead. The police officer at the scene believes Grissom has a grudge against him. The entire team has to process... read more »
Air date February 12th, 2004
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4x15: Early Rollout
The whole team must investigate a crime where a husband and his porn star wife were murdered execution style. Things get personal for Catherine when Grissom talks to her about... read more »
Air date February 19th, 2004
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4x16: Getting Off
Catherine and Sara deal with the death of what at first seems to be a transvestite. Later during autopsy they find out that the make-up he seemed to be wearing was actually... read more »
Air date February 26th, 2004
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4x17: XX
A mutilated female body is discovered tied to the undercarriage of a bus carrying prisoners from a women's correctional facility after a severed arm flies out from beneath the... read more »
Air date March 4th, 2004
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4x18: Bad To The Bone
A violent murder in a casino parking garage and another episode in the police interview room lead the CSIs to one shocking discovery after another. The case involves a missing... read more »
Air date April 1st, 2004
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4x19: Bad Words
Warrick, Catherine, and Nick try to determine the cause of a house fire that kills a teenage kill. The fire is in the same neighborhood as a similar arson fire. Grissom and Sara... read more »
Air date April 15th, 2004
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4x20: Dead Ringer
Grissom, Catherine and Nick investigate the death of a runner during a competition. Meanwhile Sara and Warrick investigate the death of couple in a hotel room, initially... read more »
Air date April 29th, 2004
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4x21: Turn Of The Screws
A roller coaster runs off track leaving 6 people dead. The CSI team must uncover whether this was an accident, or foul play. Warrick and Catherine try to find the killer of a... read more »
Air date May 6th, 2004
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4x22: No More Bets
Two men are found murdered after scamming Sam Braun's casinos. Grissom and Warrick investigate after Catherine is thrown off the case. One of the suspects is the son of a man... read more »
Air date May 13th, 2004
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4x23: Bloodlines
A casino employee is beaten and raped on her way home from work, but she survives and identifies her attacker. Unfortunately, a DNA test sets him free and Grissom must wrestle... read more »
Air date May 20th, 2004
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