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The Worst Episodes of CSI: Crime Scene Investigation

Every episode of CSI: Crime Scene Investigation ranked from worst to best. Explore the Worst Episodes of CSI: Crime Scene Investigation!

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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 Worst Episode
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    CSI: Crime Scene Investigation Season 9 Episode 18 - Mascara
    6.3/10(909 votes)

    S9:E18

    Langston is shocked when his former student is found murdered and becomes the focus of a CSI investigation into the world of Mexican wrestling.

    Director:William Friedkin
    Writer:Unknown

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  2. CSI: Crime Scene Investigation Season 15 Episode 8 - Rubbery Homicide
    6.6/10(446 votes)

    S15:E8

    The CSI team find themselves taking a look into the kinky world of “rubber dolls” as they investigate the murder of a man stabbed in an alley.

    Director:Louis Shaw Milito
    Writer:Tom Mularz

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  3. CSI: Crime Scene Investigation Season 6 Episode 20 - Poppin' Tags
    6.8/10(836 votes)

    S6:E20

    The CSI team is lead into the rap music world as they investigate the murders of three rival teen rappers.

    Director:Bryan Spicer
    Writer:Dustin Lee Abraham

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  4. CSI: Crime Scene Investigation Season 15 Episode 4 - The Book of Shadows
    6.8/10(476 votes)

    S15:E4

    A chemistry teacher's science experiment goes horribly wrong.

    Director:Brad Tanenbaum
    Writer:Gavin Harris

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  5. CSI: Crime Scene Investigation Season 11 Episode 1 - Shock Waves
    6.9/10(1039 votes)

    S11:E1

    The CSI team investigates a well-orchestrated bombing at the funeral of Officer Franklin Clark

    Director:Alec Smight
    Writers:David Weddle, Bradley Thompson

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  6. CSI: Crime Scene Investigation Season 13 Episode 14 - Exile
    6.9/10(506 votes)

    S13:E14

    The CSIs investigate the demise of a famous Cuban singer’s sister who’s in town as part of a U.S. tour. Meanwhile, Hodges begins to get cold feet at the prospect of marrying his Italian bombshell girlfriend.

    Director:Jeffrey G. Hunt
    Writer:Carlos M. Marimon

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  7. CSI: Crime Scene Investigation Season 14 Episode 20 - Consumed
    6.9/10(459 votes)

    S14:E20

    As the CSIs hunt a cannibalistic killer, they realize there is more than one.

    Director:Karen Gaviola
    Writer:Tom Mularz

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  8. CSI: Crime Scene Investigation Season 13 Episode 20 - Fearless
    7.0/10(467 votes)

    S13:E20

    The CSI team investigates a popular spiritual retreat when a body is found floating in a mud bath. Meanwhile, Hodges questions his marriage plans to Elisabetta.

    Director:Eagle Egilsson
    Writer:Gavin Harris

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  9. CSI: Crime Scene Investigation Season 15 Episode 7 - Road to Recovery
    7.0/10(441 votes)

    S15:E7

    The CSI team take a look into the death of a woman who has been drinking and taking drugs in a pool at a rehab facility.

    Director:Alec Smight
    Writer:Andrew Dettmann

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  10. CSI: Crime Scene Investigation Season 9 Episode 24 - All In
    7.1/10(719 votes)

    S9:E24

    A cache of missing chips from a closed down casino turn up in Vegas and a string of murders follow, leading Langston to use deadly force for the first time in his career as a CSI.

    Director:Paris Barclay
    Writer:Unknown

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  11. CSI: Crime Scene Investigation Season 10 Episode 12 - Long Ball
    7.1/10(700 votes)

    S10:E12

    The CSI investigates the mystifying death of a former pro golfer whose allegiance to the game might have cost him everything.

    Director:Alec Smight
    Writer:Christopher Barbour

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  12. CSI: Crime Scene Investigation Season 10 Episode 14 - Unshockable
    7.1/10(772 votes)

    S10:E14

    When a band member of Rascal Flatts is electrocuted by his own guitar during a concert, the CSI team investigates if it was a case of foul play.

    Director:Kenneth Fink
    Writer:Michael Frost Beckner

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  13. CSI: Crime Scene Investigation Season 11 Episode 3 - Blood Moon
    7.1/10(771 votes)

    S11:E3

    A vampire and werewolf convention becomes the center of a murder investigation.

    Director:Brad Tanenbaum
    Writers:Treena Hancock, Melissa R. Byer

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  14. CSI: Crime Scene Investigation Season 11 Episode 16 - Turn On, Tune In, Drop Dead
    7.1/10(732 votes)

    S11:E16

    The team investigates two apparent corpses who aren't exactly dead at all.

    Director:Paul McCrane
    Writer:Tom Mularz

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  15. CSI: Crime Scene Investigation Season 12 Episode 21 - Dune and Gloom
    7.1/10(648 votes)

    S12:E21

    When a bomb kills an off-road race truck driver mid-race, the CSI team is called on the scene to investigate why.

    Director:Jeffrey G. Hunt
    Writer:Tom Mularz

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  16. CSI: Crime Scene Investigation Season 14 Episode 3 - Torch Song
    7.1/10(498 votes)

    S14:E3

    The CSI team investigates a fire at a music venue that leaves four people dead, including two band members.

    Director:Brad Tanenbaum
    Writer:Unknown

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  17. CSI: Crime Scene Investigation Season 14 Episode 8 - Helpless
    7.1/10(485 votes)

    S14:E8

    A dead man is found inside a human-size hamster ball; the team collaborates on a serial rapist investigation.

    Director:Karen Gaviola
    Writer:Tom Mularz

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  18. CSI: Crime Scene Investigation Season 14 Episode 17 - Long Road Home
    7.1/10(478 votes)

    S14:E17

    A murdered groupie and a missing prostitute both have connections to a mysterious band.

    Director:Philip Conserva
    Writer:Gavin Harris

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  19. CSI: Crime Scene Investigation Season 15 Episode 16 - The Last Ride
    7.1/10(414 votes)

    S15:E16

    The CSI team investigates a death involving a vintage Rolls Royce and a chrome-covered victim.

    Director:Timothy Beavers
    Writer:Gavin Harris

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  20. CSI: Crime Scene Investigation Season 5 Episode 4 - Crow's Feet
    7.2/10(862 votes)

    S5:E4

    A woman is found dead in a hotel suite with symptoms of the ebola virus. Another woman is found dead with similar symptoms. Catherine and Nick investigate. Sara and Greg with help from Grissom try to determine how a the owner of a home was killed. His home was tented for infestation.

    Director:Richard J. Lewis
    Writer:Josh Berman

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  21. CSI: Crime Scene Investigation Season 5 Episode 12 - Snakes
    7.2/10(845 votes)

    S5:E12

    The swing shift has a busy time. Warrick looks into the murder of man by someone who apparently needs a wheelchair. Nick looks into the murder of woman in the subculture of the narcocorrido, songs about drug murders. The night shift is slow and lends help to Catherine's team.

    Director:Richard J. Lewis
    Writer:Dustin Lee Abraham

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  22. CSI: Crime Scene Investigation Season 9 Episode 13 - Deep Fried and Minty Fresh
    7.2/10(761 votes)

    S9:E13

    Langston and Nick are called to investigate a murder at a fast food restaurant and have quite a task ahead of them when they discover that much of the evidence is coated in cooking oil.

    Director:Alec Smight
    Writers:Corinne Marrinan, Sarah Goldfinger

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  23. CSI: Crime Scene Investigation Season 9 Episode 15 - Kill Me If You Can
    7.2/10(741 votes)

    S9:E15

    The CSI are called to three different crime scenes in one night that are seemingly unrelated, but each case's forensic evidence reveals a common link

    Director:Nathan Hope
    Writer:Unknown

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  24. CSI: Crime Scene Investigation Season 10 Episode 20 - Take My Life, Please!
    7.2/10(730 votes)

    S10:E20

    A legendary comic from the good old days of Las Vegas is set to reunite with his partner on stage for one night only, until one half of the famous duo is found dead.

    Director:Martha Coolidge
    Writers:David Rambo, Dustin Lee Abraham

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  25. CSI: Crime Scene Investigation Season 11 Episode 2 - Pool Shark
    7.2/10(784 votes)

    S11:E2

    The team investigates when a woman is attacked by a shark in the pool at a Las Vegas casino.

    Director:Michael Nankin
    Writer:Dustin Lee Abraham

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Worst Episodes Summary

"Mascara" is the worst rated episode of "CSI: Crime Scene Investigation". It scored 6.3/10 based on 909 votes. Directed by William Friedkin and written by Unknown, it aired on 4/2/2009. This episode scored 0.3 points lower than the second lowest rated, "Rubbery Homicide".