In the long-running procedural's 15th season, the team faces a slew of challenges, including quarantines, car bombs and a jailhouse murder.
All episodes — Season 15
S15 E1The CSI Effect
Sep 28, 20147.643 min
Finlay must deal with a bomb planted in her car. Russell gets a call from someone claiming to be the Gig Harbor killer.
S15 E2Buzz Kill
Oct 5, 20147.443 min
The CSI team investigates a robbery and fatal shooting at a medical marijuana shop.
S15 E3Bad Blood
Oct 12, 20147.643 min
Sara and Greg are quarantined after responding to a crime scene that’s contaminated with a deadly pathogen.
S15 E4The Book of Shadows
Oct 19, 20147.343 min
A chemistry teacher's science experiment goes horribly wrong.
S15 E5Girls Gone Wilder
Nov 9, 20147.742 min
Morgan, Sara and Fin try to relax at a forensics conference when a mass shooting occurs on site.
S15 E6The Twin Paradox
Nov 16, 20146.343 min
Frustration mounts for the CSI team as another victim surfaces who is linked to the Gig Harbor Killer.
S15 E7Road to Recovery
Nov 23, 20147.442 min
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.
S15 E8Rubbery Homicide
Nov 30, 20146.243 min
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.
S15 E9Let's Make a Deal
Dec 7, 20147.643 min
The CSI team investigates a murder at Clark County jail after an inmate stumbles upon a body while running away from officers.
S15 E10Dead Rails
Dec 14, 20147.342 min
The CSI team investigates the bizarre death of a man who was killed not once, but twice.
S15 E11Angle of Attack
Dec 21, 20146.443 min
The CSIs' investigation of the victim of an apparent hit and run leads them into the world of aeronautics.
S15 E12Dead Woods
Dec 28, 20147.643 min
The CSI team reopens a 10-year-old murder/suicide case when the sole survivor claims her accused father was innocent.
S15 E13The Greater Good
Jan 4, 20157.544 min
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.
S15 E14Merchants of Menace
Jan 25, 20157.843 min
The CSI team investigates a homicide at a convention for people who collect macabre murder memorabilia.
S15 E15Hero to Zero
Jan 25, 20157.444 min
The CSI team investigates the murder of a young victim dressed as a superhero.
S15 E16The Last Ride
Jan 27, 20157.243 min
The CSI team investigates a death involving a vintage Rolls Royce and a chrome-covered victim.
S15 E17Under My Skin
Feb 15, 20156.942 min
The CSI team investigates a murder with ties to two teenaged kidnapped girls.
S15 E18The End Game
Feb 15, 20156.543 min
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.