|Supply and Demand|
|Writer||Erica Shelton & Anne McGrail|
|Original Airdate||April 27, 2005|
|Previous Episode: Crime & Misdemeanor|
|Next Episode: On the Job|
Supply and Demand is the twentieth episode in season 1 of CSI: NY.
When a college student is beaten, shot to death and his apartment ransacked in what appears to be a drug-related hit, the team must track down his killers. After examining the evidence in the murdered student's apartment, the team finds traces of pure, unprocessed heroin and discovers that the victim had a female roommate who is now missing.
- Gary Sinise as Det. Mack "Mac" Taylor
- Melina Kanakaredes as Det. Stella Bonasera
- Hill Harper as Dr. Sheldon Hawkes
- Eddie Cahill as Det. Don Flack
- Carmine Giovinazzo as Sgt. Danny Messer
- Vanessa Ferlito as Det. Aiden Burn
- Chad Lindberg as Chad Willingham
- Joe Morton as Chief Dwight Hillborne
- Jowharah Jones as Kaitlyn
- Trent Gill as Bill
- Devin Cromwell as Will Novick
- Taylor Sheridan as Joel Banks
- Cliff Weissman as Mr. Novick
- Don Wallace as Shaun Deroy
- Matt McCoy as Martin Benson
- Sunkrish Bala as Alex
- Lindsay Parker as Jordan Benson
- Amy Aquino as Diane Lipstone
- When Stella asks who the roommate of the male victim was, she says "her" roommate instead of "his".
- Supposedly a "restricted number SMS" was sent. No such thing is possible.
- "Holiday" by Green Day.
- "Idaleo" by Capoeria Twins.
- "I Am Home" by Massive Attack.
- "Collar Stays On" by Massive Attack.
- "Ibrahim" by Diefenbach.