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21 Episodes 2007 - 2008
Season 4 begins with Mac Taylor (Gary Sinise) returning from a vacation in London and immediately investigating a murder at the Statue of Liberty, where blood is discovered on the statue's crown and face.\ During the probe, Mac tells Stella (Melina Kanakaredes) that when he was in London he was awakened each night at 3:33 am by an unknown caller who would then hang up. Mac soon learns he is being stalked and the numbers in the phone call's time are connected to his past in Chicago. As for Stella, she begins seeing a new man, Drew Bedford (Kerr Smith), but he's not all he seems to be. And things get more heated for Stella when an arson fire erupts in her apartment building, and it becomes obvious that Adam (A.J. Buckley) has a crush on her. Danny (Carmine Giovinazzo) goes into an emotionally dark place when a 10-year-old boy in his care is killed, and he can't shake the fact that he is responsible for the boy's death. The incident threatens to derail Danny's relationship with Lindsay (Anna Belknap). Meanwhile, Flack (Eddie Cahill) becomes attracted to Det. Jessica Angell (Emmanuelle Vaugier) and the two start dating. The city is terrorized by an unknown taxi driver who murders victims in his cab and then dumps their bodies. Reed Garrett (Kyle Gallner), the son of Mac's late wife, fancies himself to be an ace Internet reporter and begins investigating the case, much to Mac's dismay. Other intriguing cases include: a dying man confesses to a murder 24 hours before it takes place in a case that may involve time travel; a mass murder occurs at the infamous "Amityville Horror" house on Long Island; Mac becomes an avatar in a computer-generated virtual world to track down a woman's killer; and Mac enters an active crime scene when a bank robbery goes awry and the thief, who is holding hostages, demands that a CSI come in to prove he didn't kill the bank's manager.
Episode 1
Wed, Sep 26, 2007 60 mins
As the fourth season begins the team find themselves investigating something that isn't usually on the Statue of Liberty. Can a musician's life be saved before time runs out?
Episode 2
Wed, Oct 3, 2007 60 mins
After a body is found in New York Harbor, Mac uncovers a plot to assassinate a diplomat and the location of a hidden treasure.
Episode 3
Wed, Oct 10, 2007 60 mins
Mac and Stella investigate a series of robberies targeting some of Manhattan's wealthiest citizens, and the key to cracking the case is a mysterious sports car that is rigged like one seen in James Bond movies. Also, Mac receives phone calls from an unidentified caller who may be targeting him.
Episode 4
Wed, Oct 17, 2007 60 mins
Is it possible to solve a murder 24 hours before it happens? Mac wonders if the suspect traveled through time to know about the murder in advance.
Episode 5
Wed, Oct 24, 2007 60 mins
The latest murder case takes Detective Taylor to a whole new world and he must figure out why Cheryl Duncan looks so life-like. They also discover something shocking about the murderer while online.
Episode 6
Wed, Oct 31, 2007 60 mins
The CSI team goes to a haunted house to solve more than just the latest case. Before they can solve the crime Lindsay is told something will happen to her if she doesn't leave soon.
Episode 7
Wed, Nov 7, 2007 60 mins
A man is stabbed to death in Madison Square Park and a woman is fatally shot outside a museum, and the investigations reveal the two victims were sexual predators who were acquitted by the courts.
Episode 8
Wed, Nov 14, 2007 60 mins
New York City has everything: Times Square, billboards, parties, and a dead model in a giant martini glass. Now the team must find a party crasher who crashed one party too many.
Episode 9
Wed, Nov 21, 2007 60 mins
A groom is murdered on his wedding day and his body is wrapped like a present; and Stella finds a box of bloody puzzle pieces on her car, a discovery that causes Mac to fly to Chicago to solve the mystery.
Episode 10
Wed, Nov 28, 2007 60 mins
Mac closes in on the "333" stalker who is pursuing him and learns the significance of the numbers; a CSI is taken hostage.
Episode 11
Wed, Dec 12, 2007 60 mins
It's no laughing matter when a murder victim is discovered with traces of disappearing ink and an exploding cigar. The investigation leads the CSIs to a notorious prank seller known as Laughing Larry. Meanwhile, Danny probes a case that involves a boy from his neighborhood.
Episode 12
Wed, Jan 9, 2008 60 mins
A much-despised hotel owner is discovered dead beneath an ice sculpture; and a woman is accidentally hit and killed by a school bus while walking down a highway in her nightgown.
Episode 13
Wed, Jan 23, 2008 60 mins
Mac investigates the murder of a woman outside of a flower shop and then probes the death of man discovered two buildings down from the first victim. The CSIs work to determine if the two killings are related.
Episode 14
Wed, Feb 6, 2008 60 mins
The team must figure out how a self-cleaning restroom leads to a drowning.The team also investigates the death of a man who was set on fire and flew into a fire truck.
Episode 15
Wed, Apr 2, 2008 60 mins
After the CSI's receive an anonymous tip they're led to an old warehouse hoping to catch one of New York's most-wanted criminals.
Episode 16
Wed, Apr 9, 2008 60 mins
A fire breaks out in Stella's apartment building and she rescues a neighbor's son trapped in the blaze. Soon, it is determined that arson was the cause of the fire and that a charred body found in the building was likely placed there before the inferno began. The investigation reveals a convicted arsonist lives down the hall and that Stella's neighbor may be involved in criminal activity.
Episode 17
Wed, Apr 16, 2008 60 mins
The team must figure out how a young woman and a shark end up dead on the beach at the same time. This case gets even more interesting when a second body washes up on the beach.Quinn Shelby observes the team at work to determine if the lab should get their annual accreditation.
Episode 18
Wed, Apr 30, 2008 60 mins
A prep-school guidance counselor who is serving as a chaperone for a dance is brutally beaten and murdered in a school lab. The investigation reveals the victim may have been involved with drugs and gambling. Meanwhile, Mac is pressured to find the so-called taxicab killer before he strikes again.
Episode 19
Wed, May 7, 2008 60 mins
The CSIs search for the so-called cabbie killer after another one of his victims is discovered floating in a fountain. In another case, a hoops fan randomly selected from a drawing at an arena dies after sinking a basketball shot worth $1 million. The investigation reveals the victim was poisoned. Bill Raftery and Verne Lundquist appear as themselves.
Episode 20
Wed, May 14, 2008 60 mins
A suspect who is thought to be the so-called cabbie killer turns up dead, but Mac isn't convinced the case is solved, and he thinks that the real culprit may still be stalking the city's streets.
Episode 21
Wed, May 21, 2008 60 mins
In the fourth-season finale, a bank robbery goes wrong and a manager is gunned down. The botched attempt and shooting prompt a nervous gunman to take hostages and to demand that a CSI be brought in to prove he is innocent.