New York City Police Department

The New York City Police Department (NYPD or NYCPD), officially the City of New York Police Department, was established in 1845, and is the largest municipal police force in the United States, having primary responsibilities in law enforcement and investigation within the five boroughs of New York City. The NYPD is one of the oldest police departments established in the United States.

The NYPD has a broad array of specialized services, including the Emergency Service Unit, K-9, harbor patrol, air support, bomb disposal, counter-terrorism, criminal intelligence, anti-gang, anti-organized crime, narcotics, public transportation and public housing; The New York City Transit Police and New York City Housing Authority Police Department were fully integrated into the NYPD in 1995.

Castle

 * Javier Esposito - Homicide detective
 * Kate Beckett - Homicide detective
 * Kevin Ryan - Homicide detective
 * Lanie Parish - Medical examiner
 * Richard Castle - Authorized consultant
 * Victoria Gates - Police captain