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Season guide

CSI: NY: Season 4

21 episodes Premiered Sep 26, 2007 Updated Sep 25, 2026

The fourth season of the procedural police drama CSI: NY continues the overarching saga of the crime scene investigation team based in New York City. As the third installment in the CSI franchise, the series maintains its focus on forensic science and criminal investigation within the urban landscape of the city. Following the established format of the previous seasons, the narrative arc spans 21 episodes, detailing

Previously on CSI: NY

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ CSI: NY is a procedural police drama series that originated as a spin-off from CSI: Miami.
  • ⚡ The series is part of the broader CSI franchise, which began with the original CSI: Crime Scene Investigation.
  • ⚡ The investigative team operates within New York City and is led by Detective Mac Taylor.
  • ⚡ The show follows a forensic investigation format, focusing on the collection and analysis of evidence to solve crimes.

Season overview

The fourth season of the procedural police drama CSI: NY continues the overarching saga of the crime scene investigation team based in New York City. As the third installment in the CSI franchise, the series maintains its focus on forensic science and criminal investigation within the urban landscape of the city. Following the established format of the previous seasons, the narrative arc spans 21 episodes, detailing the professional efforts of the forensic unit as they analyze physical evidence to solve complex cases. Under the leadership of Detective Mac Taylor, the team navigates the challenges of the New York City justice system. The season builds upon the foundation laid by its predecessors, CSI: Crime Scene Investigation and CSI: Miami, continuing the procedural storytelling that characterizes the franchise. Throughout these 21 episodes, the investigators utilize scientific methodology to process crime scenes, examine evidence, and identify perpetrators, maintaining the series' commitment to the crime, drama, and mystery genres. The season serves as a continuation of the established series trajectory, focusing on the collaborative work of the forensic experts as they address the criminal activities occurring within their jurisdiction, ensuring the continuity of the investigative narrative established in the show's earlier years.

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Season 4 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

24%
76%
Mytharc (5): Crucial lore & season climaxes
Core (16): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Can You Hear Me Now?

Sep 26, 2007 · 43 min

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?

S4·E2 Core

The Deep

Oct 3, 2007 · 40 min

Sheldon Hawkes goes under water to gather clues but could be in danger when he can't come up for air. Mac learns of something else under water.

S4·E3 Core

You Only Die Once

Oct 10, 2007 · 41 min

After a series of heists in the city (one including Det. Chief Sinclair's house) one of the "super spies" involved is robbed of his life. The team works to solve the robberies and

S4·E4 Core

Time's Up

Oct 17, 2007 · 43 min

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.

S4·E5 Core

Down The Rabbit Hole

Oct 24, 2007 · 43 min

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 murd

S4·E6 Core

Boo

Oct 31, 2007 · 43 min

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 soo

S4·E7 Core

Commuted Sentences

Nov 7, 2007 · 43 min

The team has two cases tonight and two great tourist locations: Madison Square Park where a man is stabbed to death, and the Metropolitan Museum of Art, where a woman is shot dead

S4·E8 Core

Buzzkill

Nov 14, 2007 · 43 min

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.

S4·E9 Core

One Wedding and a Funeral

Nov 21, 2007 · 44 min

What would otherwise be a happy wedding goes sour when the groom... turns up dead: inside a wedding present. After Stella finds bloody puzzle pieces inside a box on her car, Mac h

S4·E10 Mytharc

The Thing About Heroes

Nov 28, 2007 · 43 min

While in Chicago Mac uncovers more clues about his stalker and reveals his troubled past. Meanwhile, in New York the rest of the team is in danger. The hunt is on to figure out the

S4·E11 Core

Child's Play

Dec 12, 2007 · 44 min

Danny is devastated when a young boy he knows is killed in the midst of a bodega robbery. Meanwhile, Lindsay, Stella and Flack investigate the death of a man killed by an exploding

S4·E12 Core

Happily Never After

Jan 9, 2008 · 42 min

Mac and the team feel they're headed back to Kansas when they find the victim's body with red shoes on her feet crushed to death under an unusual object. The team learns about pop

S4·E13 Core

All in the Family

Jan 23, 2008 · 42 min

In this episode Mac and his team must figure out how a woman's death and a judge's murder are connected. Danny has trouble dealing with Ruben Sandoval's death.

S4·E14 Core

Playing With Matches

Feb 6, 2008 · 44 min

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.

S4·E15 Core

DOA For a Day

Apr 2, 2008 · 43 min

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.

S4·E16 Core

Right Next Door

Apr 9, 2008 · 44 min

Stella's life is in danger after her apartment is on fire; she must try to save everyone in the building. The team also has a mystery to solve after finding a dead body in Stella'

S4·E17 Core

Like Water For Murder

Apr 16, 2008 · 42 min

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. Q

S4·E18 Mytharc

Admissions

Apr 30, 2008 · 42 min

When a guidance counselor is murdered at a private school, the mayor orders Mac and his team to drop everything to find out what happened. Mac is frustrated because he can't devote

S4·E19 Core

Personal Foul

May 7, 2008 · 42 min

As the search for the taxi cab killer continues riding a cab gets very deadly. The team must figure out how to keep New York City safe. Also Danny, Lindsey, and Flack investigate

S4·E20 Mytharc

Taxi

May 14, 2008 · 41 min

Mac and his team finally believe they have captured the taxi cab killer but there is one problem - he is found dead. Mac must figure out how to keep the streets of New York City sa

S4·E21 Mytharc

Hostage

May 21, 2008 · 42 min

When a man takes hostages during a failed attempt to rob a bank, Mac offers himself in exchange for a hostage. Only condition is that he must prove that the bank robber did not kil

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