D.B. Russell leads the CSI team on a hunt to find Morgan and Ellie Brass following their kidnapping by a ritualistic killer.
The CSI team investigate a murder at a high stakes poker game.
The CSI team investigates a fire at a music venue that leaves four people dead, including two band members
When contestants on a reality cooking show accidentally eat human flesh during a competition, the CSI team is brought in to investigate
Catherine Willows returns to help the CSIs solve a cold case that has haunted the team for 14 years
The CSI team investigates the death of a homeless man who had a huge winning streak at a small casino
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
When a man is found dead inside a human-sized hamster ball, the CSI team is brought in to investigate. Also, the team collaborates with a swing shift CSI on a case involving a serial rapist
The CSI team is called in to investigate the stabbing of a couple found at a local motel that is reminiscent of two incidents that occurred in the same room
A spa weekend for Sara, Finlay and Morgan turns into a murder investigation and missing persons case when Finlay disappears, as the CSI team must piece together what happened in detail to find her
When a man is found murdered at an elaborate holiday party complete with real snow and live reindeer, the CSI team is brought in to investigate
A petty crime aboard an inbound plane to Vegas becomes a murder investigation when one of the passengers is found dead.
The CSIs are called to investigate a car crash and are shocked to discover the victim is someone they know.
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
A 16 year old girl with ties to a brothel dies and Nick and Greg have to investigate.
When a murder takes place at a chess tournament, the team must rely on a former chess mentor of Sanders' in order to capture "a chess obsessed serial killer" before he can checkmate his next victim.
Source: CSI files
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 are called to investigate when an entire family is reported to have been missing for a month