Detective Mac Taylor is a dedicated and driven crime-scene investigator who believes that everything is connected and everyone has a story.
The job is his life and he focuses on cases until they are solved. Along with his partner, Stella Bonasera, they lead a team of experts through the gritty and kinetic city that never sleeps.
The New York CSIs may have a different process from those in Las Vegas or Miami, but they are guided by the same steadfast determination.
These skilled investigators follow the evidence as they piece together clues and eliminate doubt, to ultimately crack their cases.
In Season Four the audience will be sent for a joy ride when they watch Detective Mac Taylor cope with a dangerous stalker with a fixation on the number 333.
Bloody T-shirts, calls in the middle of the night, a puzzle of the New York Skyline spotted with blood ... What does it mean and how does it connect with Mac? Will he figure out the dubious message before it's too late?
Meanwhile, Stella meets a younger man who launches into a vigorous pursuit for her attention.
With her past relationship failures in place, she's weary to jump into a new romance, but he persists, affections never waning. Will this charming young man win her heart?
The rest of the team, along with Mac and Stella, continues making Manhattan a safer place, putting away one bad guy after the next.
Don't miss a minute of the new season that follows the Crime Scene Investigators of New York as their cases escalate taking them on a whirlwind tour going as far as Chicago and finally back to the city where it all began, the city where the lights shine brighter than anywhere else in the world, New York.