The CSI team says goodbye to Catherine Willows as she makes a life-changing decision.
Watch Now:AmazoniTunesCatherine comforts Warrick when he is accused of murdering a famous Vegas gangster and even he is uncertain of his guilt or innocence.
Watch Now:AmazoniTunesWhen the CSI team is called in to investigate a man who is shot at point-blank range in a local casino, they shut down the entire building to find their killer.
Watch Now:AmazoniTunesA string of deaths, including a gamer found dead on his couch and a newly divorced man at the bottom of a pool, instigate a bet among the CSIs as to whether they've "hit for the cycle" - a homicide, a suicide, an accidental and a natural death all in one night
Watch Now:AmazoniTunesWhen 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.
Watch Now:AmazoniTunesThe 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.
Watch Now:AmazoniTunesThe CSIs sift through the overwhelming evidence from a shootout with drug dealers, to determine who was responsible for the death of a police officer killed during the incident.
Watch Now:iTunesGrissom returns from his sabbatical; Keppler is put into a compromising position when the bodies of a Trenton police officer and a hooker are found in a hotel room. The man who found them is a retired New Jersey cop and close friend to Keppler, who doesn't reveal their relationship.
Watch Now:iTunesGreg, for his final proficiency, has to determine how the Sherlock Holmes of a Sherlock Holmes club was killed. Nick and Warrick try to determine how the driver of a jeep was killed when the car ran off the road. They have to do this under budget while Catherine is watched by Ecklie.
Watch Now:iTunesThe CSIs become the focus of a reality TV series, which follows them while they investigate a serial rapist, who recently gained access to a woman's apartment by posing as a fireman. Also, Warrick's work on the late-shift is causing problems with his marriage to Tina.
Watch Now:iTunesWhile investigating the murder of a convicted ex-cop, the CSIs stumble upon a list in his prison cell with names of several individuals he believed might have been his wife's true killer.
Watch Now:iTunesA 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 in his career as a CSI.
Watch Now:iTunesThe CSIs dig to find the truth about how a recent shootout at a gun store might connect to a young woman who may have committed suicide.
Watch Now:iTunesCatherine and Detective Vartann are thrown together in a hotel room for 24 hours as they stake out a duo making drugs in the room next door. Meanwhile, Nick and Langston work a case that involves a fetish which has become big business in Vegas.
Watch Now:iTunesA high roller who spent the night with a woman he had just met is found dead on the loading dock of the casino where he was staying. The investigation reveals that the victim won $10,000 in a pool game and was an assistant to a respected movie producer.
Watch Now:iTunesA serial killer strikes again, and the CSI team tries new technology using evidence from a prior killing. They find a fingerprint belonging to Jesse Acheson, who becomes the prime suspect. A boy confesses to the killing of his brother, but evidence suggests that he may not have committed the crime.
Watch Now:iTunesAt Keppler's request Catherine uses a different approach to catch the killer, and in doing so she deceives the rest of the CSI team. The team soon discovers that something is amiss in Catherine’s investigation.
Watch Now:iTunes(Crossover episode with Without A Trace, Season 6 Episode 6.) Grissom and the team join forces with Jack Malone, an FBI Agent from New York to track a serial killer.
Watch Now:iTunesThe team investigates the death of a police officer who died during a shootout, leaving hundreds of bullets on the crime scene. Sofia wonders if it was her who fired the fatal shot.
Watch Now:iTunesWhen a policeman kills another officer, the CSIs must look to the evidence to determine if the shooting was premeditated or an accident.
Watch Now:iTunesWhile Langston testifies in the trial of a respected Congressman, new evidence sends the CSIs back to the lab to reopen the investigation.
Watch Now:iTunesThe 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, and a murder at a hip new restaurant where patrons dine in the dark
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