Long Island’s two major police departments are among the largest local law enforcement agencies in the United States. Protecting and serving, the Nassau and Suffolk County police departments are key to the quality of life on the Island – as well as the quality of justice. They have the dual missions of enforcing the law and of holding accountable those officers who engage in misconduct.

Each mission is essential.

Newsday's series of case histories, Inside Internal Affairs, looks at how cloaked in secrecy by law, the systems for policing the police in both counties imposed no, or little, penalties on officers in cases involving serious injuries or deaths.

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