CSI: Crime Scene Investigation Season 15 Episodes

Find out where to watch Season 15 of CSI: Crime Scene Investigation tonight
Overview TV Listings Seasons & Episodes Cast

Season 15 Episode Guide

Episode 1 - The CSI Effect

Finlay must deal with a bomb planted in her car, while Russell gets a call from someone claiming to be the Gig Harbor killer. Mark-Paul Gosselaar guest stars as twins Jared Briscoe and Paul Winthrop, and Mark Valley guest stars as Detective Daniel Shaw.
Episode 2 - Buzz Kill

The CSI team investigates a robbery and fatal shooting at a medical marijuana shop.
Episode 3 - Bad Blood

Sara and Greg are quarantined after responding to a crime scene that's contaminated with a deadly pathogen.
Episode 4 - The Book of Shadows

The CSI team suspects foul play when a chemistry teacher's science experiment goes horribly wrong. Guest stars include Marissa Jaret Winokur as Principal Dawn Meadows, Skipp Sudduth as Ed Lusk and Bella Thorne as Hannah Hunt, a student.
Episode 5 - Girls Gone Wilder

Morgan, Sidle and Finlay try to relax at a forensics conference when a mass shooting occurs on site.
Episode 6 - The Twin Paradox

Frustration mounts for the CSI team as another victim surfaces and all evidence points to the Gig Harbor Killer. Guest stars include Mark-Paul Gosselaar as twins Jared Briscoe and Paul Winthrop, Mark Valley as Detective Daniel Shaw and Patricia Arquette as Avery Ryan.
Episode 7 - Road to Recovery

The CSI team investigates the death of a woman full of alcohol and drugs in a pool at a rehab facility.
Episode 8 - Rubbery Homicide

The CSI team delves into the kinky world of "rubber dolls" when they investigate the murder of a man stabbed in an alley.
Episode 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.
Episode 10 - Dead Rails

The CSI team investigates the bizarre death of a man who was killed not once, but twice. Sharon Osbourne guest stars as Elise Massey, the manager of a billiards championship.
Episode 11 - Angle of Attack

The CSI's investigation of the victim of an apparent hit and run leads them into the world of aeronautics.
Episode 12 - Dead Woods

The CSI team reopens a 10-year-old murder/suicide case when the sole survivor claims her accused father was innocent. Dean McDermott guest stars as Garth Fogel, a suspect in the case.
Episode 13 - The Greater Good

The CSI team learns the main suspect in the gig harbor killings is being released from jail due to lack of evidence. Guest stars include Mark-Paul Gosselaar as twins Jared Briscoe and Paul Winthrop, and Mark Valley as Detective Daniel Shaw.
Episode 14 - Merchants of Menace

The CSI team investigates a homicide at a convention for people who collect macabre murder memorabilia.
Episode 15 - Hero to Zero

The CSI team investigates the murder of a young victim dressed as a superhero.
Episode 16 - The Last Ride

The CSI team investigates a death involving a vintage Rolls Royce and a chrome-covered victim.
Episode 17 - Under My Skin

The CSI team investigates a murder with ties to two teenaged kidnapped girls. Lisa Rinna guest stars as Tori Nolan, the wife of the director of the San Diego Crime Lab.
Episode 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. Guest stars include Mark-Paul Gosselaar as Paul Winthrop, Mark Valley as Detective Daniel Shaw and Eric Roberts as Daniel Larson.


More movies and TV shows at the American TV Listings Guide..

-

In order to keep our service free we display advertising and may earn affiliate fees for purchases you make on external sites that we partner with.
All content is © 2025 On TV Tonight unless pertaining to advertisers, companies, studios, movies and TV series listed on this site.