Season 15
In the long-running procedural's 15th season, the team faces a slew of challenges, including quarantines, car bombs and a jailhouse murder.
Episodes
1. The CSI Effect
Finlay must deal with a bomb planted in her car. Russell gets a call from someone claiming to be the Gig Harbor killer.
2. Buzz Kill
The CSI team investigates a robbery and fatal shooting at a medical marijuana shop.
3. Bad Blood
Sara and Greg are quarantined after responding to a crime scene that’s contaminated with a deadly pathogen.
4. The Book of Shadows
A chemistry teacher's science experiment goes horribly wrong.
5. Girls Gone Wilder
Morgan, Sara and Fin try to relax at a forensics conference when a mass shooting occurs on site.
6. The Twin Paradox
Frustration mounts for the CSI team as another victim surfaces who is linked to the Gig Harbor Killer.
7. Road to Recovery
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.
8. Rubbery Homicide
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.
9. Let's Make a Deal
The CSI team investigates a murder at Clark County jail after an inmate stumbles upon a body while running away from officers.
10. Dead Rails
The CSI team investigates the bizarre death of a man who was killed not once, but twice.
11. Angle of Attack
The CSIs' investigation of the victim of an apparent hit and run leads them into the world of aeronautics.
12. Dead Woods
The CSI team reopens a 10-year-old murder/suicide case when the sole survivor claims her accused father was innocent.
13. The Greater Good
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.
14. Merchants of Menace
The CSI team investigates a homicide at a convention for people who collect macabre murder memorabilia.
15. Hero to Zero
The CSI team investigates the murder of a young victim dressed as a superhero.
16. The Last Ride
The CSI team investigates a death involving a vintage Rolls Royce and a chrome-covered victim.
17. Under My Skin
The CSI team investigates a murder with ties to two teenaged kidnapped girls.
18. The End Game
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.