Episodes
- S4 E1 - Assume NothingOctober 8, 200342minTwo 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.This video is currently unavailable
- S4 E2 - All For Our CountrySeptember 24, 200344minWhen the lead suspects in Grissom's serial killer case are murdered, Grissom suspects an inside job.This video is currently unavailable
- S4 E3 - HomebodiesOctober 1, 200342minGrissom and Warrick get the case of an old woman found mummified in her closet. Sara and Nick arrive to investigate a breaking and entering to find a raped teen.This video is currently unavailable
- S4 E4 - Feeling The HeatNovember 12, 200344minDuring Vegas' latest Heat wave of triple digit temperatures, Gil and Catherine investigate a baby locked in a car. Warrick investigates a man's death of an apparent heat stroke in his house.This video is currently unavailable
- S4 E5 - Fur and LoathingOctober 22, 200343minThe 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.This video is currently unavailable
- S4 E6 - JackpotOctober 29, 200343minA 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.This video is currently unavailable
- S4 E7 - Invisible EvidenceNovember 5, 200344minWarrick'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.This video is currently unavailable
- S4 E8 - After The ShowNovember 19, 200344minA suspect's infatuation with Catherine results in her taking over a high profile case.This video is currently unavailable
- S4 E9 - Grissom Versus The VolcanoDecember 10, 200343minThe sheriff is under political pressure to find who killed an air marshal with a car bomb that the sheriff witnessed.This video is currently unavailable
- S4 E10 - Coming Of RageDecember 17, 200344minA teenager is found murdered on a construction site. Grissom, Sara, and Warrick follow the lead of blood on a hammer. Nick, with an assist from Catherine, tries to find how a woman was killed by a gunshot on her lawn when no one nearby had a gun.This video is currently unavailable
- S4 E11 - Eleven Angry JurorsJanuary 7, 200441minThe 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.This video is currently unavailable
- S4 E12 - ButterfliedJanuary 14, 200444minA 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.This video is currently unavailable
- S4 E13 - SuckersFebruary 11, 200444minGrissom, Sara, and Nick respond to an electrocution at a casino. The casino is hosting Japanese antiquities. The electrocution is just a ruse to steal the central piece of the exhibit.This video is currently unavailable
- S4 E14 - Paper Or Plastic?February 4, 200444minA 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.This video is currently unavailable
- S4 E15 - Early RolloutFebruary 18, 200444minThe whole team must investigate a crime where a husband and his porn star wife were murdered execution style.This video is currently unavailable
- S4 E16 - Getting OffFebruary 25, 200443minCatherine and Sara deal with the death of what at first seems to be a transvestite.This video is currently unavailable
- S4 E17 - XXMarch 10, 200444minA 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 vehicle and strikes a car.This video is currently unavailable
- S4 E18 - Bad To The BoneMarch 31, 200443minA violent murder in a casino parking garage and another episode in the police interview room lead the CSIs to one shocking discovery after another.This video is currently unavailable
- S4 E19 - Bad WordsApril 14, 200444minWarrick, Catherine, and Nick try to determine the cause of a house fire that kills a teenage girl. The fire is in the same neighborhood as a similar arson fire. Grissom and Sara investigate a man found dead with letter tiles in his stomach.This video is currently unavailable
- S4 E20 - Dead RingerApril 28, 200443minGrissom, Catherine and Nick investigate the death of a runner during a competition. Meanwhile Sara and Warrick investigate the death of a couple in a hotel room, initially thought to be a murder-suicide.This video is currently unavailable
- S4 E21 - Turn Of The ScrewsMay 5, 200443minA roller coaster runs off its track, leaving six people dead. The CSI team investigates whether this was an accident or foul play.This video is currently unavailable
- S4 E22 - No More BetsMay 12, 200444minTwo young men are found murdered after scamming Sam Braun's casinos.This video is currently unavailable
- S4 E23 - BloodlinesMay 19, 200443minA casino employee is beaten and raped on her way home from work, but she survives and identifies her attacker.This video is currently unavailable