CSI: Crime Scene Investigation

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.

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

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

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.

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

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, Mark Valley and Patricia Arquette.

The CSI team investigates the death of a woman full of alcohol and drugs in a pool at a rehab facility.

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

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

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.

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

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.

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.

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

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

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

The CSI team investigates a murder with ties to two teenaged kidnapped girls. Lisa Rinna guest stars.

The CSI unit faces the final showdown with the Gig Harbor killer whose motives are finally revealed. Mark-Paul Gosselaar, Mark Valley and Eric Roberts guest star.