Catherine and Nick become absorbed in the dangerous world of street racing after one of the illegal sport's hotshot drivers is found dead out in the desert at an abandoned airstrip. Back in town, Grissom and his crew probe the sudden death of a renowned poker player who suffered a violent convulsion in the middle of a high-stakes game with three others. It looks like natural causes, at first, but Grissom suspects foul play.
When a famous movie star (played by Chad Michael Murray) is accused of a double murder, his lawyer hires Grissom's former mentor to find errors in the CSIs' work. Things get even worse when their personal lives are used against them in the pre-trial hearing – especially Grissom, who worries that his hearing problem may affect his credibility. (Also featuring The Wallflowers, in a performance in the episode's cold open.)
Grissom, Catherine, Nick and Warrick investigate when a wealthy couple is murdered at their house, which was up for sale. Meanwhile Sara is sent to a local high school where a cheerleader was found eviscerated on the football field.
Grissom, Sara and Nick suspect murder when the body of a dwarf is found hanging from a rope above the stage at a Little People's convention. Catherine and Warrick investigate a murder during a home invasion. While processing the scene, Catherine is attacked by the suspect.
Grissom investigates when a woman vanishes while taking part in a magician's act. The female volunteer is placed inside the Amazing Zephyr's "Chamber of Doom" and the illusionist thrusts swords through the box. When it's opened, she's gone---and doesn't reappear in her seat as she's supposed to. Only traces of blood are left inside the chamber. Clues lead the CSIs to an eerie, decrepit mansion filled with secrets. Elsewhere, a rock star's death on a band bus appears to be the result of an overdo
Fifteen years ago, Catherine helped to put "The Blue Paint Killer" John Mathers on death row for the rape and murder of a young student at a local college. At the very last second on the day of his execution, he's granted a stay based on new DNA evidence. The CSIs have limited time to provide new evidence that would allow the execution to continue; otherwise, Mathers would get a new trial. Meanwhile, Grissom, Nick and Sara are looking for a missing student, who is found murdered and left in exac
Grissom, Sara and Warrick investigate when a boxer dies in the ring during a boxing match; they would discover that not only the fight was rigged, but it was also set up for murder. Nick quickly solves a robbery at a jewelry store, but finds reason not to close the case just yet. Catherine investigates when a gang member is shot at a parking lot. They would later determine that all three cases would have the same connections with each other.
Catherine called in by a pornographic-film developer to view graphic footage from a snuff movie in which a woman is brutally slain. But the clues are scant: The murderer isn't clearly seen, the cheap-looking hotel room could be almost anywhere and the film was sent to the developer anonymously. Outside of town, Grissom investigates another killing when a body, smothered with fire ants, is found stuffed inside a large toolbox. The initial findings indicate that the person died well over a year ea
Distracted by an attractive passenger, an Indian taxi driver feels his cab strike something at a suburban intersection. When he gets out to check, he finds a teenage boy pinned beneath the left rear tire, apparently killed on impact. The cabbie jumps back into the taxi to call for help, but a mob of angry onlookers - all of them white - drags him out and beats him for the crime. When Grissom arrives on the scene, he discovers that the teen has been eviscerated and has stab wounds, but shows no s
Grissom, Nick and Warrick investigate when a body falls from the sky and lands between a couple of rollerbladers. But soon Grissom's problem with otosclerosis forces him to leave the case to Nick and Warrick. Grissom's otologist would recommend that he schedule surgery soon to rectify his hearing problem. Nick and Warrick, carrying on with their case, would determine it was a bizarre murder by paragliding. Meanwhile, Catherine investigates the death of a man who was shot with his own gun, only t
Grissom and Catherine investigate when the chef of a fancy restaurant ends up in a meat grinder. They soon discover a lot more went on in the kitchen than cooking. Meanwhile Sara and Warrick find out that the apparent suicide of a young woman who suffered from bipolar disorder is actually a murder. (First appearance of lab technician David Hodges (Wallace Langham).)
When bird watchers spotted a raven with a human eyeball in its beak, it is up to Catherine, Sara and Nick to find the rest of the body and the killer. Meanwhile, Phillips and Dr. Robbins discovered a corpse of a car salesman that still had a heartbeat, so they manage to save his life; after he died "twice", Grissom and Warrick find out who at his dealership wanted the man dead; originally suspected to have died of a heart attack, the evidence would point to a motive that would lead to murder.
When the nine-year-old daughter of Warrick's former mentor is killed in a drive-by shooting, Warrick lets his emotions lead him to assume a suspect, a former classmate of his, is guilty without looking at the evidence. Meanwhile Nick investigates when a man is found dead in a sealed computer room; all of the victim's employees had reason to kill him, but none of them claim to have seen a thing.
Grissom, Catherine, Nick and Warrick investigate a 'peeping Tom' who escalated into breaking into women's apartments and terrorizing them. Meanwhile Sara reopens the murder case of a colleague's husband. Left paralyzed, she undergoes an operation to retrieve the bullet from her neck that would identify her killer, with a chance that she may die during the operation.
Grissom and Brass pay another visit to Lady Heather when one of her employees is found dead in a local club during a foam party. Meanwhile, Catherine is faced with a crisis when she has to save her daughter Lindsey from a flooded car and her former husband Eddie who was driving the car is found murdered. (First series appearance of Alimi Ballard, in a role of a music producer. He would have a supporting role as Detective Kevin Crawford beginning in Season 13.)
After a police chase on the Las Vegas Strip, a man with a wooden stake lodged in the back of his head stumbles out of his car before dying; Grissom and Nick investigate, finding ties to a murder and a fraudulent scheme involving gold. Meanwhile, Catherine and Warrick try to find evidence when the 5-year-old son of a professional basketball player is kidnapped.
Sara, Catherine and Warrick investigate a deadly car crash at a popular bar - many of its victims being employees at an insurance company that had placed a cancer victim's health in limbo. As they investigate, Sara finds out that her paramedic boyfriend Hank was not only first on the scene, but also that one of the survivors was his longtime girlfriend. Meanwhile, Grissom and Nick investigate the death of a woman who died of carbon monoxide poisoning; her husband, who was sleeping next to her, s
In the backcountry, two ATV bikers stumbled upon a barrel containing chemical waste, which later was determined to conceal a badly decomposed body; Catherine, Nick and Sara investigate the case, which would lead to a robot combat competition. Meanwhile, Greg helps Grissom and Warrick solve the murder of a man whose body is found in an alley, after being killed in his own home.
When a patron's cell phone goes off during a movie at a theater, an usher discovered that the man was murdered. Grissom and Catherine would discover that its murder weapon, a screwdriver, was found to possess glove prints. When the incriminating leather gloves are recovered the team discovers a unique combination of chemicals on them that lead them to a suspect. Meanwhile, Warrick, Nick and Sara investigate the death of a teenager found shot to death in a bullet-riddled warehouse, where more tha
Grissom and Catherine investigate the murder of a comic who dropped dead on stage after drinking from a bottle of water laced with naratriptamine. Warrick is sent to a convenience store to investigate the death of a 15-year-old boy only to find out the boy died after drinking the same brand of water, triggering a public health alert and a massive recall. Meanwhile; Brass asks Nick and Sara to investigate a case he ruled an accidental death after spotting the 'grieving' husband in a very expensiv
Grissom, Nick and Catherine investigate when a horse trainer is found dead in the cargo bay of a private jet. At first it looks like the victim is trampled by the horse, but Grissom and his team soon discover the situation involved a diamond smuggling scheme, with the horse doubling as a mule. Meanwhile, Sara and Warrick investigate how two teens could have committed suicide in the middle of the desert, only to determine that it was murder following a custody dispute over the girl's baby.
Grissom, Sara, and Nick investigate the murder of a young woman who was involved with a shady ex con, found dead in the press box of a high school stadium, found less than an hour after the woman's death. However, much of the evidence in that case would be endangered following an explosion in the DNA Lab that leaves Greg seriously injured and hospitalized. Catherine and Warrick try to find out who is responsible for what would be a workplace accident. Sara struggles to cope with the psychologica
Things get personal for the CSIs in the top-rated series' third-season finale, which explores the intersection of the investigators' work and their personal lives. Three masked bandits steal a safe-deposit box from a Las Vegas bank in a daring daytime heist, during which Det. Lockwood is killed. Lockwood's death provides Grissom and his crew with added incentive to find the murderous culprits. But the case really hits home for Catherine when the evidence leads to casino owner Sam Braun, who is l