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23 Episodes 2009 - 2010
Episode 1
Wed, Sep 23, 200960 mins
Following a spray of machine gunfire, the CSI team rises from the chaos. But when one member's life is significantly changed, it proves to be the emotional motivation they need to piece together their lives and ultimately find the shooter.

Episode 2
Wed, Sep 30, 200960 mins
The case of a cyber killer, who appears to be targeting medical health-care workers, turns personal when the suspect invokes the name of Mac's father who had died nearly two decades earlier.

Episode 3
Wed, Oct 7, 200960 mins
Mac and the crime lab deal with a killer who is using compasses to leave clues to his crimes.

Episode 4
Wed, Oct 14, 200960 mins
A woman is cleared of murdering her cheating husband by DNA, despite the fact she confessed to being the murderer. As the team search for answers, the phantom murderess may be involved in 21 other crimes. However, the top suspect is only accountable for 3 of the 21 crimes, and is cleared of a fourth by that crime being committed at the exact same time as another. Who or what caused this? Meanwhile, Don's behaviour is called into question after he nearly gets himself killed by hesitating during the armed arrest of the suspect.

Episode 5
Wed, Oct 21, 200960 mins
When an unidentified shooting victim turns out to be a rising star in the underground world of hip-hop dance battles, the CSIs turn their attention to a long list of rival dancers.

Episode 6
Wed, Nov 4, 200960 mins
When a software company executive bleeds to death on a Manhattan street, the CSIs must delve into the wet and messy world of food "sploshing" parties - where groups of people experience food in an sensual way - to find his killer.

Episode 7
Wed, Nov 11, 200960 mins
A big rig accident results in the discovery of an interstate trucking ring that specializes in human cargo and black market organ harvesting -- and sets off a race against time to save a hostage.

Episode 8
Wed, Nov 18, 200960 mins
After a body falls from the 59th Street Bridge, the CSI team finds a compass near the body pointing east, and realizes it's the third victim of the Compass Killer. Meanwhile, detective Flack, still dealing with Angell's death, goes AWOL.

Episode 9
Wed, Nov 25, 200960 mins
In the culmination of a multi-episode mystery, Mac and his team uncover the dark lair of a murderous madman, the Compass Killer. But as they race to save his fourth victim, the sunrise presents one final surprise that no one ever expected.

Episode 10
Wed, Dec 9, 200960 mins
Mummified remains are found in a booby-trapped Manhattan penthouse that has been closed off for more than 80 years, and Mac and Stella race against time to find the people who discovered the body, who are still trapped in the building.

Episode 11
Wed, Dec 16, 200944 mins
CSI uncovers a plot to collect millions of dollars in life insurance after a reformed homeless man is found dead in an alley.

Episode 12
Wed, Jan 13, 201042 mins
A murder trial is delayed and the suspect is released on bail after Stella discovers that the district attorney in the case tampered with the crime scene for personal gain.

Episode 13
Wed, Jan 20, 201060 mins
When a beautiful star quarterback of the Lingerie Football League is found murdered in the locker room hot tub with traces of lidocaine in her system, the CSIs are called in to find out who wanted her dead.

Episode 14
Wed, Feb 3, 201060 mins
When a young woman's body is found in Central Park, drained of blood and missing part of her ear, the CSIs jump start an investigation that takes them into the dark and mysterious subculture of vampirism.

Episode 15
Wed, Feb 10, 201060 mins
Two days before a Grand Prix Race, when a racing legend dies in a car explosion on the streets of Manhattan, the CSIs discover that car tampering is the cause; however, the investigation leads viewers through the professional racing community and beyond.

Episode 16
Wed, Mar 3, 201060 mins
On the night of a young man's 21st birthday, his friends take him out to celebrate, but when they turn up dead and he's found walking in the middle of the street covered in his friends' blood and wielding an axe, the CSIs must trace the events of the man's wild night to figure out just what happened.

Episode 17
Wed, Mar 10, 201060 mins
In St. Patrick's Day, while all the city turns green with celebration, the team faces two corpses drenched in red. They'll lead them to discover a big secret about the gold making operation that could prove deadly for Reed's friend who saw the crime and was about to expose the secret.

Episode 18
Wed, Apr 7, 201060 mins
Sid rules the death of a woman whose twin brother disappeared 15 years ago a suicide, but Stella is convinced that he is wrong and sets out to prove it.

Episode 19
Wed, Apr 14, 201060 mins
Dr. Hawkes is trapped in a cell block during a security breach orchestrated by a familiar face from CSI's past, and the only person who can help him get to safety is the death row inmate who murdered his sister.

Episode 20
Wed, May 5, 201060 mins
When a slab of concrete starts bleeding in midtown, the CSIs' investigation takes them into the underground world of hardcore fighting, where men moonlight as "weekend warriors" for the pleasure of a live viewing audience.

Episode 21
Wed, May 12, 201060 mins
When Mac and Aubrey come across the scene of a 14-year-old boy who has been shot in front of his 12-year-old brother, it takes Mac's drive for justice to another level.

Episode 22
Wed, May 19, 201060 mins
While Mac recuperates at home after being injured, he witnesses a mysterious briefcase exchange that leads to a murder, and unexpectedly brings him in contact with his former girlfriend, Peyton Driscoll.

Episode 23
Wed, May 26, 201060 mins
The CSIs follow a trail left by Shane Casey and realize that he is targeting Danny, who is vacationing out of town with Lindsay and their daughter.
