|Minor Character: New York|
|Family||Ian Casey (brother; deceased)|
|Occupation|| Serial killer (originally)|
Spree Killer (later)
|Portrayed By||Edward Furlong|
|First Appearance||Hung Out to Dry|
Shane Casey was raised by his brother, Ian from a very young age and looked up to his brother as a hero. His worship turned into obsession when Ian in 2003 was put away for a fatal robbery that Shane thought he was innocent of committing. On the day of the sentencing, Ian hanged himself. Shane began to harbour a great hatred for all those involved in his brother's case and used a series of trendy t-shirts as inspiration for his grisly killings.
Hung Out to Dry
Shane was present at a frat party where a young woman named Amy Feiner was murdered. He was interviewed on the scene by Danny Messer, who noticed later on that he was wearing a T-shirt similar to the one the victim was wearing. Shane appeared to assist the team by pointing out the T-shirt the victim was wearing was a knock off of a shirt series created by a company called edoclaundry.com. Each of the 8 T-shirts contained a hidden code that, when entered at the website, revealed a clue in a fictitious online murder mystery involving a band called Poor Richard.
The T-shirt the victim was wearing (depicting a Hydra) was created by a company whose website was kodecon.com, an anagram for "Docket No.". When Stella Bonasera and Sheldon Hawkes entered the hidden code on the victim's shirt-everything and nothing-a short video of Ian Casey (who was then unidentified) appeared. Later victims were also found with these knock-off shirts, who were revealed to be created by Shane Casey himself in an effort to expose the unjustified prosecution and subsequent suicide of his brother, Ian. Amy Feiner had been killed for being the one who led the jury, which reached a verdict in only half an hour. The second victim, Kenneth Chandler, had been killed for being the sole eyewitness against Ian. His intended third victim, who was saved, was Jerry Ganville, Ian's lawyer who had slept through the proceedings. Shane also made a shirt representing Sheldon, who had done the autopsy on Ian's alleged victim. In the end of the episode, he somehow escapes custody.
After his escape from police custody he set up a plan to once and for all exonerate his brother using the CSIs to do it. He first starts stalking Hawkes and learning his routine and then arranges a robbery and murder similar to his brother's case and frames Hawkes for the crime. He then kills the junkie he hired to tie up any loose ends. He contacts the CSIs, saying he will give the evidence to clear Hawkes if the team will prove Ian was innocent. He demands to talk to Danny Messer alone, and during this confrontation, Danny brings proof that Ian did indeed commit the crime for which he was arrested; during the robbery, Ian took a ring from the bartender he robbed and killed. The ring was never connected to the robbery and was presumed to have belonged to Ian. After his conviction and subsequent suicide, it was placed among his personal possessions, which is how Shane, who later dropped it when he killed the junkie, got hold of it. Thoroughly devastated, Shane was then easily arrested for murdering the man he had hired to impersonate Hawkes and commit the robbery.
Flag on the Play
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While in prison Shane becomes friends with his cell-mate Ethan Ganz and eventually Ethan helps Shane hatch an escape plan over the next three years. He begins by having Ethan steal all of Danny's belongings and brought it all to Shane. He decided to keep everything but the dog tags and Ethan pawned them for some quick cash. Shane then started making poison while Ethan takes a state trooper's family hostage in preparation for his plan.
On the night of the execution of a double murderer Reggie Tifford, he poisoned a guard which caused a lockdown and bringing in state troopers, including the one Shane has under his thumb. The trooper told the guard to open Shane's cell but the guard fought back, effectively killing him and opening all the cells by accident. This caused a riot which caused Hawkes, who was present at the time of the execution, to be trapped where Shane noticed him and trapped him in his own cell along with Reggie. They eventually break out and try to stop Shane from escaping. But Shane puts on a stolen NYPD uniform and Danny's stolen badge, kills the state trooper and escapes while Reggie is killed by swat officer and Sheldon is wrestled to the ground unable to stop him. The state trooper's family is rescued and Shane and Ethan are both in the wind.
Point of View
Stella shows Mac CCTV footage of Shane continuing to impersonate Danny in a bar.
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Shane reappears at a bar where he leaves a puzzle wrapped in a fake dollar bill where he is spotted by an off-duty cop named Nicholas Henderson, who calls it in. This eventually leads a chase scene where the cop and Don arrest Shane and plan to send him back to prison. But before they can do the perp walk Shane kills the guard with his own chains, unlocks himself and uses his body to cushion the fall from the building. Mac and Stella try to arrest him but he takes a woman hostage and manages to make his escape. Shane then hits his former cell-mate over the head and stuffs another dollar bill code down his throat killing him in the process. He then proceeds to the Messer's vacation getaway where Shane tries to kill Danny but is stopped and eventually drops off a cliff where he is presumed dead. But he survives and returns to Messer's home where he takes Lucy hostage and Shane aims a gun at Danny, and a shot rings out.
The 34th Floor
It is eventually revealed that Lindsay was the one who fired the shot and killed Shane Casey, ending his reign of terror over the CSIs once and for all.
Shane kills his victims in a number of different ways, including decapitating with a blowtorch, blunt force trauma and stabbing with railroad spikes. The one consistent thing about his murders is that he usually leaves behind some sort of riddles or codes that lead the authorities to him and his next goal.
Shane is intelligent, disciplined, focused and very driven. In his first appearance, he was a mission-oriented avenger whose goal was to give his brother justice. As the show progresses, however, Shane becomes more and more aggressive to the point of becoming a full-blown psychopath who kills either because he simply enjoys it or because his victims are no longer of any use to him. In the later episode, he holds a special grudge against Danny for being the one who showed him the evidence of his brother's guilt.
- October 10: Amy Feiner (drugged, dressed in a shirt with a hydra image and decapitated with a blowtorch; killed for leading Ian's jury)
- October 11: Kenneth Chandler (eyes gouged out and rail spikes driven through; painted eyes on his chest; killed for testifying against Ian)
- October 11:
- November 28: Unnamed junkie (accomplice; killed in an unspecified way)
- April 14, 2010:
- Donnie (the executioner; poisoned with cyanide)
- Officer Miller (accomplice; shot)
- May 26:
- Unnamed policeman (fatally strangled him with his handcuffs)
- Unnamed woman (briefly held at gunpoint; threatened to kill)
- May 26-27: Ethan Ganz (accomplice; knocked out with a ball-point hammer and asphyxiated by shoving a horseshoe-crab model-shaped dollar down his throat)
- May 27: Danny Messer (attempted to shoot)
- May 28-29: Lucy Messer (briefly held hostage)
Known Victims by Proxy
The following were murdered by Shane Casey's accomplices
- November 29, 2006: Kelly Jones (bartender; shot by the unnamed junkie; framed Sheldon for the act)
- April 14, 2010: Unnamed guard (shot and killed by Officer Miller accidentally)
- Unnamed junkie (accomplice in the framing of Sheldon; deceased)
- Ethan Ganz (Shane's former cell-mate; deceased)
- Officer Miller (the state trooper who helped Casey escape; deceased)
- Season Three
- Season Six
- Season Seven
- The 34th Floor (last episode)