CSI: NY - Season 1 - Eps 9: Officer Blue
After mounted officer Valasquez is shot down in the park, Mac goes looking for the bullet that killed the officer only to learn that it is lodged in the horse's spine and cannot be removed without being fatal to the horse. The investigation leads them to a local street vendor, but stalls when the D.A. asks Mac not to do anything to risk the horse until after the woman who donated it has a chance to say goodbye. Aiden investigates the body of a young man, Lenny Starks, who was found face-down, dead in the street. Aiden traces the young man to a local pizza parlor where she faces intimidation from the bookies who use it as a gambling front.
About CSI: NY

Title: CSI: NY
First Air Date: 2004-09-22
Last Air Date: 2013-02-22
Status: Canceled
Rating: 7.4/10 (from 699 votes)
Language: EN
Seasons: 9
Total Episodes: 197
Network: CBS
Genres: Crime, Drama, Mystery
Production Companies: CBS Productions, Jerry Bruckheimer Television, CBS Studios
Synopsis
Follow the investigations of a team of NYPD forensic scientists and police officers identified as "Crime Scene Investigators".
Cast

Gary Sinise
Mac Taylor

Anna Belknap
Lindsay Monroe

Sela Ward
Jo Danville

Carmine Giovinazzo
Danny Messer

Hill Harper
Sheldon Hawkes

Eddie Cahill
Donald Flack Jr.

Robert Joy
Sid Hammerback

A.J. Buckley
Adam Ross