The CSI team investigates the death of a woman full of alcohol and drugs in a pool at a rehab facility.
Sara and Greg become quarantined after entering a crime scene that is contaminated with a deadly pathogen.
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.
Russell is taken hostage after a teenager opens fire in a police station.
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.
The CSIs investigate the murders of an Elvis impersonator and a bird that are somewhat connected.
Nick and Greg investigate the death of a 16-year-old girl with ties to a brothel.
The CSIs investigate a car crash and are shocked to discover the victim is someone that they know.
The CSI team is brought in to investigate when a man is found murdered at an elaborate holiday party.
Sara, Finlay and Morgan's spa weekend turns into a murder investigation/missing persons case when Finlay goes missing, the CSI team figure out what happened in detail in order to find her.
The CSI are called in to investigate the stabbing of a couple found at a motel that and discover two other incidents which occurred in the same room.
The CSI team investigates when a man is found dead inside a human-sized hamster ball.
The CSI team investigates a John Doe found during torrential rains in Vegas. Meanwhile, Greg Sanders is investigated and accused of framing a man for murder seven years ago.
The CSI's investigates a murder of a homeless man who was found dead after a winning streak at a Casino.
Catherine Willows returns to help the CSI's solve a cold case which has haunted the team for the last 14 years.
The CSI team is brought in to investigate a reality cooking show when contestants accidentally eat human flesh during a competition.
The CSI team investigates a fire at a club venue which killed 4 people, including two band members..
Immediately after a major poker win at a hotel casino, the poker room lights go out and the casino is robbed of over a million dollars in chips.
D.B. Russell leads the CSI team to locate both Morgan and Ellie Brass following their kidnapping.
The CSI's investigate a series of murders, as one of their own goes on a dangerous undercover mission to get close to the killer.
The CSI's team investigates the murder of a ghost hunter.
The CSI's investigate a spiritual retreat when a body is found floating in a mud bath. Hodges questions his marriage plans to Elisabetta
The CSIs investigate a triple homicide, and D.B. needs to find a way to connect with a 6-year-old girl who is the only witness and survivor.
The CSIs find a body near a forest reserve, they discover might be where a serial killer takes his intended victims.
David Phillips discovers the dead body of the most popular girl in his class at their 15-year class reunion.