The team investigates the murder of Jason, a troubled computer geek working at a low-level casino support industry job who lures a colleague, Paulie, into a dangerous plan to make…

When a policeman kills another officer, the CSIs must look to the evidence to determine if the shooting was premeditated or an accident.

When the producer of the reboot of a classic SF show is murdered at a Las Vegas science-fiction convention attended by both Hodges and Wendy (both, unknown to each other,…

Catherine revisits one of the very first cases she worked as a CSI when the convicted felon in the murder claims the verdict was based on faulty evidence.

A series of indeterminate deaths test the deductive powers of the CSI team, who fear that a public health emergency may be in the offing. Meanwhile, a friendly rivalry over…

A band of vicious bikers is given the go-ahead to take down one of their own when it’s discovered that the guy is an undercover cop.

A cache of missing chips from a closed down casino turn up in Vegas and a string of murders follow, leading Langston to use deadly force for the first time…

The CSI team is shocked and saddened when, after working with Dr. Raymond Langston (Fishburne) on the “Dick & Jane” murders, Grissom announces that his time as a CSI has…

The first day on the job for Dr. Langston turns from bad to worse when a simple burglary case quickly overlaps with a complicated arson and homicide case.

The detectives search for the murderer of FBI agent Billy Ray Jackson, only Billy Ray isn’t really an FBI agent, and neither are his impressively capable partners, Miles Baker and…

Langston and Nick are called to investigate a murder at a fast food restaurant and have quite a task ahead of them when they discover that much of the evidence…

While Langston testifies in the trial of a respected Congressman, new evidence sends the CSIs back to the lab to reopen the investigation.

The CSI are called to three different crime scenes in one night that are seemingly unrelated, but each case’s forensic evidence reveals a common link

When the CSIs are called to a murder scene at a familiar motel, Nick is thrown for a loop as he pieces together three separate murder investigations that all took…

Langston and Riley are taken hostage during the aftermath of a shootout in an usually calm Las Vegas community.

Langston is shocked when his former student is found murdered and becomes the focus of a CSI investigation into the world of Mexican wrestling.

When a seasoned sky diver is paralyzed after free falling to earth when his parachute doesn’t deploy, he turns out to be linked to the strange death-by-airborne-toxins of two wealthy…

After Warrick is shot in a Las Vegas alley, the CSI team comes together to deal with the aftermath.

A hypnotist bank robber becomes the prime suspect in a murder investigation.

After several victims are found dead while performing normal, everyday activities, the CSIs must find the reason as to why each of the victims remain upright after dying.

The team investigates the death of a woman who turns out to be the daughter of a wanted criminal.

Grissom asks Lady Heather for help when the team investigates a case connected to the world of domination.

The team has a hard time investigating a shooting in Koreatown when none of the witnesses will talk about the crime.

The murder of a mother and her child seems to be connected to a murder case from 12 years earlier.

A popular young singer is found dead outside an infamous Las Vegas nightclub, leading the CSI team to uncover a link between that crime and a murder 50 years earlier.

When the team discovers a connection between a new murder and a serial killer, Grissom secretly joins the class of a criminal pathologist (Laurence Fishburne) to help crack the case.

Catherine comforts Warrick when he is accused of murdering a famous Vegas gangster and even he is uncertain of his guilt or innocence.

Hodges stages hypothetical murders in the lab in order to give his fellow lab techs a chance to play CSI, but unbenownst to them he has other motives behind his…

The team investigates an underground mob. Warrick ends up becoming the prime suspect in a murder that’s related to the mob, and his addiction to pills starts to have a…

The world of illegal dog fighting is explored by Grissom and the rest of the team when they take on the case of a wealthy socialite who was murdered. Meanwhile,…

Two murders that happen during Las Vegas’ annual bull riding rodeo are investigated by the CSIs, who find that the murders might be connected to illegal bull breeding.

Grissom and his team battle the flu when they are called upon by D.D.A. Klein to investigate the deaths of several key witnesses for a grand jury case against a…

CSI investigates the death of a little girl whose identity remains unknown.

Brass, Catherine, Grissom and Nick work the case of a female victim found in an apartment building with a gun shot wound. Drops becomes a person of interest during the…

A deer is illegally killed, and the person found with the body in the back of his truck apparently dressed it in a tutu. The man, who was completely drunk…

Grissom, Catherine, Nick, Greg and Brass are investigating the death of a well known TV star called Annabelle.

With time, the weather, and the desert against them, the CSI team must work together to find Sara before she dies from the miniature killer’s attack.

The CSI team investigates two unusual cases, one involving the suspicious death of a go-cart racer who took his hobby to the highway and paid the price with his life,…

The team investigates a girl whose whole family had been killed and she is supposedly possessed by the devil.

Grissom investigates the mysterious hanging death of a young man whose body looks like that of a female.