The BEST episodes of CSI: Crime Scene Investigation season 4

Every episode of CSI: Crime Scene Investigation season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of CSI: Crime Scene Investigation season 4!

CSI is a crime drama in which the characters use cutting-edge forensic tools to examine the evidence to solve the case. Rather than asking 'whodunnit' (investigating witnesses/suspects), CSI explores the 'howdunnit'.

Last Updated: 9/9/2024Network: CBSStatus: Ended
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Invisible Evidence
star
7.75
679 votes

#1 - Invisible Evidence

Season 4 - Episode 7 - Aired 11/13/2003

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.

Directors: Danny Cannon
Writer: Josh Berman
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Assume Nothing (1)
star
7.52
868 votes

#2 - Assume Nothing (1)

Season 4 - Episode 1 - Aired 9/25/2003

One of two couples who meet in a bar is murdered and, when the second couple meets the same fate in a similar fashion, the team suspects a pair of serial killers is on the loose. Catherine gets some troubling news about her father's murder trial.

Directors: Richard J. Lewis
All for Our Country (2)
star
7.52
822 votes

#3 - All for Our Country (2)

Season 4 - Episode 2 - Aired 10/2/2003

When the lead suspects in Grissom's serial killer case are murdered, he suspects an inside job. Catherine and Sara investigate when a college football fan's body is found in a bathtub.

Directors: Richard J. Lewis
Bloodlines
star
7.47
641 votes

#4 - Bloodlines

Season 4 - Episode 23 - Aired 5/20/2004

A casino employee is beaten and raped on her way home from work, but she survives and identifies her attacker. When a DNA test sets him free, Grissom wrestles with his belief that evidence can never lie.

Directors: Kenneth Fink
Feeling the Heat
star
7.44
787 votes

#5 - Feeling the Heat

Season 4 - Episode 4 - Aired 10/23/2003

During the latest heat wave, Grissom and Catherine investigate a baby locked in a car. Warrick investigates a man dead of an apparent heat stroke in his house. Nick and Sara investigate when a woman's body is found floating in a lake.

Directors: Kenneth Fink
Bad to the Bone
star
7.43
744 votes

#6 - Bad to the Bone

Season 4 - Episode 18 - Aired 4/1/2004

The investigation of a violent murder in a casino parking garage leads to a missing woman, a long-dead body and a missing child.

Directors: David Grossman
Writer: Eli Talbert
After the Show
star
7.43
692 votes

#7 - After the Show

Season 4 - Episode 8 - Aired 11/20/2003

A suspect's infatuation with Catherine results in her taking over the high-profile case of a missing woman who aspired to be a showgirl.

Directors: Kenneth Fink
Homebodies
star
7.42
786 votes

#8 - Homebodies

Season 4 - Episode 3 - Aired 10/9/2003

Grissom and Warrick get the case of an elderly woman found mummified in her closet. Sara and Nick arrive to investigate a 'break and enter' to find a raped teen. Catherine looks into a found gun, now linked to a week-old murder.

Directors: Kenneth Fink
Eleven Angry Jurors
star
7.37
757 votes

#9 - Eleven Angry Jurors

Season 4 - Episode 11 - Aired 1/8/2004

The lone holdout member of a jury is found dead in the jury room. Nick reopens a four-year-old case when the sister of the victim comes forward with new evidence.

XX
star
7.36
738 votes

#10 - XX

Season 4 - Episode 17 - Aired 3/4/2004

A mutilated female body is discovered tied to the undercarriage of a bus carrying prisoners from a women's correctional facility. Warrick investigates the murder of a gambler in his brother's kitchen.

Directors: Deran Sarafian
Dead Ringer
star
7.35
703 votes

#11 - Dead Ringer

Season 4 - Episode 20 - Aired 4/29/2004

Grissom, Catherine and Nick investigate the death of a runner during a competition. Sara and Warrick look into the suspected murder-suicide of a couple in a hotel room.

Directors: Kenneth Fink
Butterflied
star
7.33
642 votes

#12 - Butterflied

Season 4 - Episode 12 - Aired 1/15/2004

When a woman resembling Sara is found murdered in her home, Grissom takes a personal interest in the case, forcing him to examine the decisions he has made in his life.

Directors: Richard J. Lewis
Writer: David Rambo
Turn of the Screws
star
7.30
661 votes

#13 - Turn of the Screws

Season 4 - Episode 21 - Aired 5/6/2004

The team investigates a roller coaster accident that leaves six people dead. Warrick and Catherine attempt to track down the killer of a 13-year-old girl.

Directors: Deran Sarafian
Writer: Josh Berman
Grissom Versus the Volcano
star
7.29
784 votes

#14 - Grissom Versus the Volcano

Season 4 - Episode 9 - Aired 12/11/2003

The sheriff is under political pressure to find the killer of an air marshall with a car bomb, Warrick and Sara investigate the murder of the wife of a headline singer on The Strip.

Directors: Richard J. Lewis
Early Rollout
star
7.29
605 votes

#15 - Early Rollout

Season 4 - Episode 15 - Aired 2/19/2004

The entire team investigates the execution murders of a porn star and her husband. Things get personal for Catherine when Grissom talks to her about her evaluation.

Directors: Duane Clarke
No More Bets
star
7.28
680 votes

#16 - No More Bets

Season 4 - Episode 22 - Aired 5/13/2004

Grissom and Warrick investigate the murder of two men who had scammed Sam Braun's casinos.

Directors: Richard J. Lewis
Paper or Plastic
star
7.27
749 votes

#17 - Paper or Plastic

Season 4 - Episode 14 - Aired 2/12/2004

A robbery at a grocery store results in a shootout leaving five dead.

Directors: Kenneth Fink
Jackpot
star
7.24
792 votes

#18 - Jackpot

Season 4 - Episode 6 - Aired 11/6/2003

When a severed head is shipped to Dr. Robbins from Jackpot, Nevada, Grissom goes to Jackpot to find the rest of the body but gets very little cooperation from the locals. Catherine gets an unexpected gift from her father.

Directors: Danny Cannon
Getting Off
star
7.23
596 votes

#19 - Getting Off

Season 4 - Episode 16 - Aired 2/26/2004

Catherine and Sara deal with the death of someone who appears at first to be transvestite. Grissom, Nick and Warrick investigate the death of a man in a homeless area.

Directors: Kenneth Fink
Writer: Jerry Stahl
Bad Words
star
7.18
616 votes

#20 - Bad Words

Season 4 - Episode 19 - Aired 4/15/2004

Warrick, Catherine and Nick try to determine the cause of a house fire that kills a teenage kid. Grissom and Sara investigate when a competitor in a word game tournament is found dead with letter tiles in his stomach.

Directors: Rob Bailey
Suckers
star
7.16
719 votes

#21 - Suckers

Season 4 - Episode 13 - Aired 2/5/2004

Grissom, Sara, and Nick respond to an electrocution at a casino. Catherine and Warrick investigate a vampire murder.

Directors: Danny Cannon
Coming of Rage
star
7.13
779 votes

#22 - Coming of Rage

Season 4 - Episode 10 - Aired 12/18/2003

Grissom, Sara, and Warrick investigate the murder of a teenager found on a construction site. Nick and Catherine try to discover how a woman on her lawn was killed by a gunshot when no-one nearby had a gun.

Directors: Nelson McCormick
Fur and Loathing
star
7.03
727 votes

#23 - Fur and Loathing

Season 4 - Episode 5 - Aired 10/30/2003

The team investigates when a man's body is found on the side of the road... dressed in a racoon suit. A gunshot victim is found in a freezer.

Directors: Richard J. Lewis
Writer: Jerry Stahl