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The Best Episodes of CSI: Crime Scene Investigation Season 4

Every episode of CSI: Crime Scene Investigation Season 4 ranked from best to worst. Discover the Best Episodes of CSI: Crime Scene Investigation Season 4!

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A Las Vegas team of forensic investigators are trained to solve criminal cases by scouring the crime scene, collecting irrefutable evidence and finding the missing pieces that solve the mystery.

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Episode Rankings

  1. #1 Fan Favorite
    CSI: Crime Scene Investigation Season 4 Episode 1 - Assume Nothing (1)
    6.5/10(14 votes)

    #1 - Assume Nothing (1)

    S4:E1

    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. The case is complicated by leaks to the press and a judge reluctant to issue a warrant. Catherine gets some troubling news about her father's murder trial.

    Director:Richard J. Lewis
    Writers:Anthony E. Zuiker, Danny Cannon

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  2. CSI: Crime Scene Investigation Season 4 Episode 2 - All for Our Country (2)
    8.3/10(11 votes)

    #2 - All for Our Country (2)

    S4:E2

    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 and Sara investigate what happened to a college football fan when his bloated body is found in a bathtub.

    Director:Richard J. Lewis
    Writer:Unknown

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  3. CSI: Crime Scene Investigation Season 4 Episode 3 - Homebodies
    8.4/10(9 votes)

    #3 - Homebodies

    S4:E3

    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 are not as disparate as they first seem. Catherine looks into a gun found by a boy. The gun is connected to a week old murder across town that Warrick caught.

    Director:Kenneth Fink
    Writers:Sarah Goldfinger, Naren Shankar

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  4. CSI: Crime Scene Investigation Season 4 Episode 4 - Feeling the Heat
    8.3/10(9 votes)

    #4 - Feeling the Heat

    S4:E4

    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 his house. Nick and Sarah investigate a woman's body found floating in the lake with a blow to the head.

    Director:Kenneth Fink
    Writers:Eli Talbert, Anthony E. Zuiker

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  5. CSI: Crime Scene Investigation Season 4 Episode 5 - Fur and Loathing
    8.1/10(9 votes)

    #5 - Fur and Loathing

    S4:E5

    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 gunshot victim is found in a deep-freezer, frozen solid.

    Director:Richard J. Lewis
    Writer:Jerry Stahl

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  6. CSI: Crime Scene Investigation Season 4 Episode 6 - Jackpot
    7.2/10(10 votes)

    #6 - Jackpot

    S4:E6

    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 gets an unexpected gift from her father.

    Director:Danny Cannon
    Writers:Carol Mendelsohn, Naren Shankar

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  7. CSI: Crime Scene Investigation Season 4 Episode 7 - Invisible Evidence
    8.1/10(11 votes)

    #7 - Invisible Evidence

    S4:E7

    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 team have 24 hours to make the case with new evidence or the killer will go free.

    Director:Danny Cannon
    Writer:Josh Berman

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  8. CSI: Crime Scene Investigation Season 4 Episode 8 - After the Show
    8.0/10(10 votes)

    #8 - After the Show

    S4:E8

    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 it takes the career making case away from them.

    Director:Kenneth Fink
    Writers:Elizabeth Devine, Andrew Lipsitz

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  9. CSI: Crime Scene Investigation Season 4 Episode 9 - Grissom Versus the Volcano
    7.2/10(11 votes)

    #9 - Grissom Versus the Volcano

    S4:E9

    The sheriff is under political pressure to find who killed an air marshall with a car bomb that the sheriff witnessed. Grissom, Catherine and Nick are pressured to produce results. Warrick and Sarah try to find the murderer of the wife of a singer who headlines on the strip.

    Director:Richard J. Lewis
    Writer:Unknown

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  10. CSI: Crime Scene Investigation Season 4 Episode 10 - Coming of Rage
    7.8/10(8 votes)

    #10 - Coming of Rage

    S4:E10

    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 woman was killed by a gunshot on her lawn when no one nearby had a gun.

    Director:Nelson McCormick
    Writer:Unknown

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  11. CSI: Crime Scene Investigation Season 4 Episode 11 - Eleven Angry Jurors
    7.0/10(12 votes)

    #11 - Eleven Angry Jurors

    S4:E11

    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 year old case when the sister of the victim comes forward with new evidence.

    Director:Matt Earl Beesley
    Writers:Josh Berman, Andrew Lipsitz

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  12. CSI: Crime Scene Investigation Season 4 Episode 12 - Butterflied
    7.6/10(14 votes)

    #12 - Butterflied

    S4:E12

    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.

    Director:Richard J. Lewis
    Writer:David Rambo

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  13. CSI: Crime Scene Investigation Season 4 Episode 13 - Suckers
    7.8/10(12 votes)

    #13 - Suckers

    S4:E13

    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 central piece of the exhibit. Catherine and Warrick deal with a vampire murder.

    Director:Danny Cannon
    Writers:Josh Berman, Danny Cannon

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  14. CSI: Crime Scene Investigation Season 4 Episode 14 - Paper or Plastic
    8.0/10(10 votes)

    #14 - Paper or Plastic

    S4:E14

    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 the enormous amount of evidence at the scene.

    Director:Kenneth Fink
    Writer:Naren Shankar

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  15. CSI: Crime Scene Investigation Season 4 Episode 15 - Early Rollout
    8.3/10(11 votes)

    #15 - Early Rollout

    S4:E15

    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 her evaluation. Brass believes that Sara may have some type of problem.

    Director:Duane Clark
    Writer:Unknown

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  16. CSI: Crime Scene Investigation Season 4 Episode 16 - Getting Off
    7.0/10(11 votes)

    #16 - Getting Off

    S4:E16

    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 facepaint, he was a clown. Grissom, Nick, and Warrick deal with the death of a man in a homeless area. They found out he worked in a recovery center for drug users.

    Director:Kenneth Fink
    Writer:Jerry Stahl

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  17. CSI: Crime Scene Investigation Season 4 Episode 17 - XX
    8.1/10(10 votes)

    #17 - XX

    S4:E17

    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 vehicle and strikes a car. Catherine leads the investigation and at first believes the woman was escaping, but the evidence increasingly points to murder. Back in town, Warrick probes the death of a gambler who was stabbed multiple times in his brother's kitchen.

    Director:Deran Sarafian
    Writer:Ethlie Ann Vare

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  18. CSI: Crime Scene Investigation Season 4 Episode 18 - Bad to the Bone
    8.5/10(10 votes)

    #18 - Bad to the Bone

    S4:E18

    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 woman, a long dead body and a missing child.

    Director:David Grossman
    Writer:Eli Talbert

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  19. CSI: Crime Scene Investigation Season 4 Episode 19 - Bad Words
    8.1/10(10 votes)

    #19 - Bad Words

    S4:E19

    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 investigate a man found dead with letter tiles in his stomach. The man was a competitor in a word game tournament.

    Director:Rob Bailey
    Writer:Sarah Goldfinger

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  20. CSI: Crime Scene Investigation Season 4 Episode 20 - Dead Ringer
    6.8/10(11 votes)

    #20 - Dead Ringer

    S4:E20

    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 thought to be a murder-suicide. Both cases take place during this 'cop' competition , with more than 20.000 attendants (all of them cops). This gives the investigations an interesting turn, as almost all the suspects and all dead people are cops.

    Director:Kenneth Fink
    Writer:Elizabeth Devine

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  21. CSI: Crime Scene Investigation Season 4 Episode 21 - Turn of the Screws
    7.2/10(12 votes)

    #21 - Turn of the Screws

    S4:E21

    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 13 year old girl.

    Director:Deran Sarafian
    Writer:Unknown

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  22. CSI: Crime Scene Investigation Season 4 Episode 22 - No More Bets
    8.0/10(9 votes)

    #22 - No More Bets

    S4:E22

    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 Braun caught cheating. Nick gets the promotion that Sara coveted.

    Director:Richard J. Lewis
    Writer:Unknown

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  23. CSI: Crime Scene Investigation Season 4 Episode 23 - Bloodlines
    8.8/10(9 votes)

    #23 - Bloodlines

    S4:E23

    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 with whether evidence can ever lie. Later, Grissom comes to the rescue of a coworker who ends up on the other side of the law

    Director:Kenneth Fink
    Writer:Unknown

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Season 4 Ratings Summary

"Assume Nothing (1)" is the best rated episode of "CSI: Crime Scene Investigation" season 4. It scored 6.5/10 based on 14 votes. Directed by Richard J. Lewis and written by Anthony E. Zuiker, Danny Cannon, it aired on 9/24/2003. This episode is rated 1.8 points higher than the second-best, "All for Our Country (2)".