Mac and Dr. Hawkes investigate the death of an expert climber who plummeted to his death while scaling the Empire State Building only to learn that he witnessed a murder. Stella and Danny investigate the death of a designer who was wearing a diamond bra he designed. Meanwhile, Aiden works on a rape case.
Mac and Hawkes investigate the murder of a plastic surgeon who was killed by having lye thrown on him in Grand Central Station and Mac fires Aiden for mishandling evidence.
Mac and Danny investigate when a tiger viciously mauls a man at a New York animal refuge while Stella and Hawkes try to find the murderer of a debutante found on a carousel.
A man who collapses and dies in the middle of the San Gennaro festival is found with a sliver of wood in his heart and Mac and Lilndsay investigate a CFO found decapitated on a park bench.
The CSI team investigates two curious deaths, the first of which involves a promising young dancer who fell from the sky to her death near the Queensboro Bridge and the second being a local fish merchant who has been impaled by an unlikely weapon, a swordfish.
Mac, Lindsay and Danny delve into the decadent Manhattan party scene to look into the companion of a rich murder victim, a man with a fondness for underage girls. Meanwhile, Stella and Dr. Hawkes track the case of a man who was possibly murdered with tainted seafood.
The pursuit of serial killer Henry Darius moves from Miami to New York as Horatio Caine from CSI Miami assists Mac with the case.
A man who was beaten and ejected from a high-stakes poker game after he was caught cheating is the chief suspect when someone kills the host of the game with a shotgun.
The CSIs piece together clues and figurines to determine who murdered the owner of a toy hospital and left him buried in a pile of doll parts.
Mac and Stella look into the death of a female roller derby star while Danny and Hawkes investigate the murder of an up and coming writer.
Danny becomes trapped inside a deceased millionaire's panic room along with the corpse of the millionaire.
A billionaire playboy and the model he was hooking up with are impaled by an arrow and it's up to the CSIs to determine who the target was.
Mac, Hawkes and Danny investigate the death of a model who collapsed on the runway during a fashion show.
The death of a college student whose body was found on the subway tracks is found to be more than accidental.
The murder of an Assistant DA leads the CSIs to a fantasy game where the object is to "assasinate" your target with a water gun.
Questions abound when the team finds a doorman dead in the water tank of a building which has had six suspicious deaths in ten years.
A witness to a horrible crime that takes place in a museum, a young boy confuses the events of the murder with a comic book he was reading at the time. Detectives struggle to find out if the crime was motivated by money, given the victims wealth.
When a helicopter containing a liver from an organ donor is hijacked from the roof of a Manhattan hospital, and a medical intern is killed in the process, the CSIs must find the perpetrators and the liver before the transplant patient dies.
Soon after being chosen first in the league draft a college football star is murdered in his hotel room. The team questions a long list of suspects that were in contact with him after his recent stardom; the illegal sale of prescription drugs are discovered during the investigation of the murder of the would-be super hero, the team suspects the victim’s killer is behind it all.
Mac is informed by an anonymous call that the body of a young man is buried at football stadium; upon further investigation the CSI Team is led to believe that the Tanglewood gang is once again involved. The leader of the Tanglewood gang was able to elude captivity before, this time Mac is making it his mission to succeed in capturing him.
A young lady stumbles over a dead body while attempting to sneak into a Kid Rock concert. It's later determined that the dead man is the popular rock stars limo driver. Mac and Lindsey question fans, uncooperative handlers and anyone who might have seen or heard anything. Things get interesting when Kid Rock himself becomes their main suspect.
Two grieving widows arrive at the scene of a murder, both claiming to be the wives of the victim, Mac, Stella and Dr. Hawks try to sort out the details when they discover that the women were knowingly involved in the marriage. A case personally affects Lindsay when she learns that a woman's lifeless' body, tangled in kelp, dressed like a mermaid is from her home town.
"Fleet Week" turns tragic, when soldiers dock at a New York City pier to celebrate, the unexpected murder of a soldier takes place. After discovering the body in Central Park, Mac questions the people who'd seen him last and knew him best, the members of his platoon.
The CSI's are looking at their toughest challenge yet when a bomber is using random cell phone pages to detonate C-4 bombs throughout the city. Time is running out as the team works with local agencies and government authorities to find the bomber and narrow down the next trigger, among the city's six million cell phones, before he strikes again.