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The Best Episodes of CSI: Crime Scene Investigation Season 15

Every episode of CSI: Crime Scene Investigation Season 15 ranked from best to worst. Discover the Best Episodes of CSI: Crime Scene Investigation Season 15!

Binge this in 12h 52m•Peaking at 7.9/10

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 15 Episode 1 - The CSI Effect
    7.7/10(494 votes)

    #1 - The CSI Effect

    S15:E1

    Finlay must deal with a bomb planted in her car. Russell gets a call from someone claiming to be the Gig Harbor killer.

    Director:Alec Smight
    Writers:Christopher Barbour, Don McGill

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  2. CSI: Crime Scene Investigation Season 15 Episode 2 - Buzz Kill
    7.2/10(435 votes)

    #2 - Buzz Kill

    S15:E2

    The CSI team investigates a robbery and fatal shooting at a medical marijuana shop.

    Director:Unknown
    Writer:Andrew Dettmann

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  3. CSI: Crime Scene Investigation Season 15 Episode 3 - Bad Blood
    7.5/10(448 votes)

    #3 - Bad Blood

    S15:E3

    Sara and Greg are quarantined after responding to a crime scene that’s contaminated with a deadly pathogen.

    Director:Louis Shaw Milito
    Writer:Tom Mularz

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  4. CSI: Crime Scene Investigation Season 15 Episode 4 - The Book of Shadows
    6.8/10(456 votes)

    #4 - The Book of Shadows

    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 15 Episode 5 - Girls Gone Wilder
    7.6/10(472 votes)

    #5 - Girls Gone Wilder

    S15:E5

    Morgan, Sara and Fin try to relax at a forensics conference when a mass shooting occurs on site.

    Director:Unknown
    Writers:Treena Hancock, Melissa R. Byer

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  6. CSI: Crime Scene Investigation Season 15 Episode 6 - The Twin Paradox
    7.5/10(442 votes)

    #6 - The Twin Paradox

    S15:E6

    Frustration mounts for the CSI team as another victim surfaces who is linked to the Gig Harbor Killer.

    Director:Philip Conserva
    Writer:Christopher Barbour

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  7. CSI: Crime Scene Investigation Season 15 Episode 7 - Road to Recovery
    7.0/10(420 votes)

    #7 - Road to Recovery

    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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  8. CSI: Crime Scene Investigation Season 15 Episode 8 - Rubbery Homicide
    6.7/10(430 votes)

    #8 - Rubbery Homicide

    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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  9. CSI: Crime Scene Investigation Season 15 Episode 9 - Let's Make a Deal
    7.2/10(415 votes)

    #9 - Let's Make a Deal

    S15:E9

    The CSI team investigates a murder at Clark County jail after an inmate stumbles upon a body while running away from officers.

    Director:Brad Tanenbaum
    Writer:Elizabeth Devine

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  10. CSI: Crime Scene Investigation Season 15 Episode 10 - Dead Rails
    7.2/10(435 votes)

    #10 - Dead Rails

    S15:E10

    The CSI team investigates the bizarre death of a man who was killed not once, but twice.

    Director:Unknown
    Writer:Gavin Harris

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  11. CSI: Crime Scene Investigation Season 15 Episode 11 - Angle of Attack
    7.2/10(429 votes)

    #11 - Angle of Attack

    S15:E11

    The CSIs' investigation of the victim of an apparent hit and run leads them into the world of aeronautics.

    Director:Kevin Bray
    Writer:M. Scott Veach

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  12. CSI: Crime Scene Investigation Season 15 Episode 12 - Dead Woods
    7.7/10(461 votes)

    #12 - Dead Woods

    S15:E12

    The CSI team reopens a 10-year-old murder/suicide case when the sole survivor claims her accused father was innocent.

    Director:Philip Conserva
    Writers:Treena Hancock, Melissa R. Byer

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  13. CSI: Crime Scene Investigation Season 15 Episode 13 - The Greater Good
    7.7/10(436 votes)

    #13 - The Greater Good

    S15:E13

    The CSI team continues their investigation into the kidnappings and murders of young women when they learn their main suspect, Jared Briscoe, is released from jail due to lack of evidence.

    Director:Alec Smight
    Writer:Christopher Barbour

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  14. CSI: Crime Scene Investigation Season 15 Episode 14 - Merchants of Menace
    7.3/10(409 votes)

    #14 - Merchants of Menace

    S15:E14

    The CSI team investigates a homicide at a convention for people who collect macabre murder memorabilia.

    Director:Claudia Yarmy
    Writer:Tom Mularz

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  15. CSI: Crime Scene Investigation Season 15 Episode 15 - Hero to Zero
    7.2/10(402 votes)

    #15 - Hero to Zero

    S15:E15

    The CSI team investigates the murder of a young victim dressed as a superhero.

    Director:Philip Conserva
    Writer:Andrew Dettmann

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  16. CSI: Crime Scene Investigation Season 15 Episode 16 - The Last Ride
    7.1/10(397 votes)

    #16 - The Last Ride

    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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  17. CSI: Crime Scene Investigation Season 15 Episode 17 - Under My Skin
    7.6/10(425 votes)

    #17 - Under My Skin

    S15:E17

    The CSI team investigates a murder with ties to two teenaged kidnapped girls.

    Director:Alrick Riley
    Writers:Treena Hancock, Melissa R. Byer

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  18. CSI: Crime Scene Investigation Season 15 Episode 18 - The End Game
    7.9/10(521 votes)

    #18 - The End Game

    S15:E18

    The CSI unit faces the final showdown with the Gig Harbor killer whose motives are finally revealed. Meanwhile, Nick Stokes makes a decision that will affect the entire team moving forward.

    Director:Alec Smight
    Writer:Christopher Barbour

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Season 15 Ratings Summary

"The CSI Effect" is the best rated episode of "CSI: Crime Scene Investigation" season 15. It scored 7.7/10 based on 494 votes. Directed by Alec Smight and written by Christopher Barbour, Don McGill, it aired on 9/28/2014. This episode is rated 0.5 points higher than the second-best, "Buzz Kill".