With new supervisor D.B. Russell at the helm, the CSI team continues to use its advanced forensic methods to crack the most baffling cases.
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Episode 1
73 Seconds
After multiple attacks on a public tram, the team has just one witness and a lot of questions.
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Episode 2
Tell-Tale Hearts
When three people confess to killing a family, the team must decide who is telling the truth.
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Episode 3
Bittersweet
During a date, Stokes discovers decomposing body parts in part of an art exhibit; D.B. Russell deals with a staff member confrontation.
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Episode 4
Maid Man
The investigators attend the gala grand opening of a mob museum, only to witness an attempted hit on mob lawyer and former mayor Oscar Goodman.
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Episode 5
CSI Down
The CSI unit investigates when Frank, an apparent murder victim, sits up and needs help but is he just another victim?
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Episode 6
Freaks & Geeks
The murder of a popular sideshow performer sends the team behind the scenes at a carnival freak show.
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Episode 7
Brain Doe
The CSI crew is stumped when they discover a disembodied brain at a crime scene where all the other brains are accounted for.
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Episode 8
Crime After Crime
Three new murders related to three unsolved (or incorrectly solved) crimes from the past come back to haunt the CSIs.
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Episode 9
Zippered
The murder of a retired Army Ranger brings the FBI in on the case, to Russell and Catherine's initial chagrin.
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Episode 10
Genetic Disorder
When a man's dead body turns up naked in the bed of Doc Robbins' wife, the detectives try to "just work the scene" without bringing their pre-judgments to the table,…
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Episode 11
Ms. Willows Regrets… (1)
Catherine's friend Laura's mogul husband Mark has a lot to hide behind his successful international corporation, and he's hired a crack team of assassins to carry out the murders of…
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Episode 12
Willows in the Wind (2)
The CSI team says goodbye to Catherine Willows as she makes a life-changing decision.
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Episode 13
Tressed to Kill
When a woman is found dead and her hair is done up '70s style complete with vintage clothes, the CSI team discovers clues that point to a killer with a…
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Episode 14
Seeing Red
Russell seeks advice from a former colleague during an investigation into the death of a man's ex-girlfriend.
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Episode 15
Stealing Home
When a house is stolen completely off its foundation, the CSIs are on the case in search of answers. Meanwhile, new CSI Julie Finlay showcases her skill in blood analysis.
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Episode 16
CSI Unplugged
When a blackout cripples the city, the CSIs must revert to old-school methods to solve the case of a missing child.
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Episode 17
Trends with Benefits
When a photo of a dead college student starts trending on the Internet, the team steps in to investigate.
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Episode 18
Malice in Wonderland
The team has few leads to go on when investigating a robbery-homicide at a themed wedding
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Episode 19
Split Decisions
When 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…
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Episode 20
Altered Stakes
When Stokes learns that a man he helped put in prison is going to have his conviction overturned, the CSI team needs to prove the killer is guilty again or…
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Episode 21
Dune and Gloom
When a bomb kills an off-road race truck driver mid-race, the CSI team is called on the scene to investigate why.
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Episode 22
Homecoming
The investigation of a triple homicide leads to the discovery of corruption running rampant throughout the LVPD. The closer they get to the truth, the more serious are the repercussions.…