- 1 The 34th Floor
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The newest member of the CSI team, Jo Danville, a former FBI agent, is welcomed to her new job by stumbling upon the body of a young woman murdered in the 34th floor of the building that houses the NYPD Crime Lab.
Air Date: 2010-09-24
- 2 Unfriendly Chat
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When a young woman appears to have been strangled while participating in a live online chat, the team must determine if it was a hoax or murder.
Air Date: 2010-10-01
- 3 Damned if You Do
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When a married couple are found beaten in their home, a woman identifies her son as the killer, but another witness comes forward.
Air Date: 2010-10-08
- 4 Sangre Por Sangre
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In the delicate balance between gangs in the Spanish Harlem those who see but don't speak are the ones to survive.
Air Date: 2010-10-15
- 5 Out of the Sky
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A jewel heist at a powerful attorney's penthouse takes a bizarre turn; the case leads the CSIs to a seemingly unrelated man in the morgue.
Air Date: 2010-10-22
- 6 Do Not Pass Go
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The path of team's most recent investigation crosses that of some desperate parents in search for their missing son.
Air Date: 2010-10-29
- 7 Hide Sight
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When a series of heinous crimes strike the city, Mac finds himself between the devil and the deep blue sea; his duty to protect and serve gets in conflict with his superior's orders concerning how to handle the media and civilians' right to know.
Air Date: 2010-11-05
- 8 Scared Stiff
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A park runner tries to escape from her killer; soon afterwards, a second victim that could be connected to the case is discovered.
Air Date: 2010-11-12
- 9 Justified
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A body is found buried in Central Park together with the murder weapon.
Air Date: 2010-11-19
- 10 Shop Till You Drop
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When a winter wonderland window display is unveiled, it turns out to be a crime scene.
Air Date: 2010-12-03
- 11 To What End?
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Following the death of a bakery owner, a clown becomes a suspect whose life hangs in the balance because of Det. Flack.
Air Date: 2011-01-07
- 12 Holding Cell
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A Spanish club promoter is found dead in his apartment. The family's decision to bring the body back home might compromise the investigation.
Air Date: 2011-01-14
- 13 Party Down
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A father seeks justice for his daughter's death but getting the answers could get him in trouble.
Air Date: 2011-02-04
- 14 Smooth Criminal
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A shooting in a lounge leads the team to investigate the whereabouts of a nurse linked to one of them who has gone missing.
Air Date: 2011-02-11
- 15 Vigilante
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When a rapist is found dead in a warehouse, the CSIs must determine if any of his victims is responsible for the murder.
Air Date: 2011-02-18
- 16 The Untouchable
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A woman contacts Mac as she has some information about a possible murder. However, before Mac gets to meet with her, she ends up dead because of the information she has shared. Mac is left with more questions and two murders to solve.
Air Date: 2011-02-25
- 17 Do or Die
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When a popular student and star pupil at Manhattan's most elite private school is murdered, the CSIs find themselves immersed in the highly competitive world of over-privileged youth.
Air Date: 2011-03-11
- 18 Identity Crisis
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Jo's adopted daughter is a witness to an attack on the subway and learns the truth about her real mom.
Air Date: 2011-04-01
- 19 Food For Thought
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The team must figure out why a food truck suddenly exploded killing its owner. They also must see if the complaints filed against him had anything to do with his murder.
Air Date: 2011-04-08
- 20 Nothing For Something
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The team has to figure out if they have a killing spree going on after two women are dead and a third woman has to be found.
Air Date: 2011-04-29
- 21 Life Sentence
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After a hail of gunfire tears through the crime lab, Mac and his ex-partner become part of a vendetta 17 years in the making.
Air Date: 2011-05-06
- 22 Exit Strategy
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Mac tries to find a little girl missing since 2002 who saw the murders that took place at the time of a burglary.
Air Date: 2011-05-13