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. (TV-14 V)
Sara and Greg are quarantined after responding to a crime scene that's contaminated with a deadly pathogen. (TV-14 V)
The CSI team investigates a robbery and fatal shooting at a medical marijuana shop. (TV-14 V)
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. (TV-14 L, V)
Get caught up on the CBS drama CSI:.
The CSIs investigate a present-day crime with ties to a mob heist that occurred 25 years ago. Meanwhile, Brass has a decision to make when his daughter attempts suicide. Treat Williams guest stars.
The CSIs investigate the cyber-related murder of a prominent casino owner's wife and receive help from the FBI's Cyber Crime Division. Patricia Arquette guest stars.
The CSIs track a cannibalistic killer and discover he's not alone.
Russell is taken hostage after a teenager opens fire in a police station.
The CSIs are called to investigate when an entire family is reported to have been missing for a month.
The CSIs investigate the murder of a rock and roll groupie and the disappearance of a prostitute that both have ties to a mysterious band. KISS lead singer and Rock and Roll Hall of Famer Gene Simmons guest stars as himself.
The CSIs investigate the murders of an Elvis impersonator and a bird that are strangely connected. Ron Glass guest stars.
Nick and Greg investigate the death of a 16-year-old girl with ties to a brothel.
When the CSI team works two separate investigations, one involving a woman found murdered in Mexico and another of a local couple found dead in their driveway, they find the evidence in one case may help the other.
The CSIs are called to investigate a car crash and are shocked to discover the victim is someone they know.
A petty crime aboard an inbound plane to Vegas becomes a murder investigation when one of the passengers is found dead. Joel Grey guest stars.
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